low permeability

The casing swabbing is often used in low pressure, low permeability and low production rate oilfields for the most economical production.

Salt rock is considered to be the best media due to its characteristics of good rheological, low porosity, and low permeability etc.

The concept of this self-sealing process broadens the likelihood of cap rocks with low permeability occurring in volcanic areas .

In low permeability reservoirs, to a great extent, the oil displacement of gas injection production depends on displacement pressure.

Reservoir acidification reconstruction is one of main measures for low permeability carbonate oil-gas reservoir increasing production.

Hydraulic fracturing technology is one of economic and effective means to enhance the low permeability reservoir production.

The method can solve the technical problem of pre-extracting the coal bed gas of a coal bed, in particular for a low-permeability coal bed.

The results show that the starting pressure of low and ultra-low permeability reservoirs can be determined by this experimental method.

"Pressure relief antireflective" technology is to improve the soft low-permeability coal seam gas extraction rate in an effective way.

thirdly, to research the affects by the vertical heterogeneous barrier within the layer, capillary effect of the low permeability.

An application experimental study of NMR logging in Tahe ultra-low porosity and low permeability reservoirs in Xinjiang is conducted.

Low velocity non Darcy flow of dual media oil gas reservoirs with low permeability often makes well testing analysis more complicated.

In practice, some effective promotion measures can be used to enhance gas extraction for low permeability coal seams.

The reservoirs are low porosity, low permeability, and fracture-porosity sandstone reservoirs, which are main gas reservoirs of this area.

It is usually directly to test seepage quantity in the laboratory, which is difficult to accurately measure for low permeability rocks.

As the soft coal seam is high gas content and low permeability. it has been difficult and key for the coal seam gas extraction.

Salinity-sensitivity evaluation in ultra-low permeability sandstone reservoir and its application.

The reserve is of strong heterogeneity, and the reservoir property is medium pore, medium-low permeability or low-resistivity gas reservoir.

pure water too "pure" state of the low permeability of water will soon enter the cell, the dilution blood is not ideal.

Gas injection has been successfully used to enhance oil recovery in low permeability reservoir at home and abroad.

While for bedding rockfill which has moderate or even low permeability vacuum saturation can be used to save much time.

But some horizontal wells does not gain the perfect productivity, due to low permeability or some other reasons.

With oil and gas exploration in depth, in recent years, the majority of our newly discovered oil reservoirs are low-permeability reservoirs.

However, In the established by the current low-permeability reservoir well testing models, more is to consider the single factor.

at the mid-late production period, the contribution rate of the layer with low-permeability increases.

The results indicate that throat type in an extra-ultra low permeability sandstone reservoir is versatile and minute.

fractured gas reservoir with low permeability; gas-water biphase; nonlinear flow; threshold pressure gradient; numerical simulation.

Hydraulic fracturing is an important stimulation technique for low permeability reservoir.

High pressure air injection for light oil reservoirs can applied to both low permeability oil reservoir and flooded oil reservoirs.

The technology has been applied to the low permeability areas of Liubei Oilfield, which achieves good intensified injection results.

Experiments of enhancing injection capacity in low - permeability sandstone reservoir are conducted by nanometer technology.

It is easier to form coal and gas outburst in fractured coal due to its low permeability and high gas flowing resistance.

Do not use transparency, low permeability of ink for polyester shirt.

These reservoirs are characterized by: low permeability, reservoir fracture developed, low-yield wells, low economic efficiency.

The research has theory direction for the reasonable development of low permeability bottom water and unsaturated reservoir.

The Upper Jurassic-Lower cretaceous reservoir in Minhe Basin is commonly of low porosity and low permeability or extremely low permeability.

By studying the percolation mechanism of super-low permeability reservoir, the paper analyses its law-non Darcy percolation characteristics.

Pingbei Area Ansai Oilfield has geological specialties of the low-permeability and low-production, and the complex ground conditions.

On the basis of the mathematical model, well test design theory of low permeability gas reservoirs is studied.

Hydraulic technology was vast applied in low permeability oil-gas field exploiting and development, and gained extremely economic benefit.

Abnormal negative separations of micro - electrode log curves are very common in the low permeability reservoir.

The strand shallow lake-bar sandstone had the characteristics of thin reservoir, low porosity and low permeability.

Unsaturated seepage experiments in low permeability rock present more obvious non-linear seepage characteristics.

Hydraulic fracturing has become a common and quite effective well stimulation technology to explore and develop low permeability reservoirs.

The injecting water flow laws of the extremely low permeability reservoirs with and without fractures are described in the paper.

Essential way of solving the gas drainage problem of low permeability coal seam is to increase coal seam permeability.

The bio contact oxidation technology is suitable for the treatment of oily wastewater from Bonan low permeability oilfield.

Comprehensively, it is feasible to predict water block damages of low-permeability sandstone reservoirs by the grey correlation method.

Upper Paleozoic natural gas reservoir of Ordos Basin consists of low-permeability sandstone which bears typical secondary porosity.

The sandstone reservoir of this area is characterized by medium porosity and low permeability.

The evaluation of field use shows that the depth-pumping technology has a good applicability in low-permeability reservoir.

The pore structure mainly consists of axial canals and fine throats, being medium-high porosity, medium-low permeability reservoir.

Low-permeability, super-low-permeability hydrocarbon reservoirs distribute widely in Ordos basin.

High pressure water jet drilling is a conventional development mode for the low permeability reservoir.

Hydraulic fracturing is the dominant stimulation technology in low permeability reservoir.

Optimum flowing pressure will bring maximum productivity of the oil wells in the low permeability oilfields.

Refracturing is an important technique for enhancing or stabilizing well productivity in the low-permeability oilfield.

Wu Erhe Oilfield belongs to medium porosity, low permeability oil reservoir, and is intensively heterogeneous .

Deep-hole presplitting explosion in coal seams with high gas content and low permeability was numerically simulated and analyzed.

The fracturing fluid for low permeability reservoirs shall be aimed at reducing filter loss and damage.

Formate solid free drilling fluid is aimed at solving low porosity, low permeability and borehole instability in Jilin oilfield.

This provides a scientific evaluation method for waterflooding in low permeability reservoirs.

This paper produces a high efficiency and cheap inorganic gel oil displacement agent suitable for low permeability, fractured reservoir.

In this paper, a zero-filtration hole stabilizing agent and composition of ultra-low permeability drilling fluid are presented.

Gas reservoirs with super-high pressure and low permeability usually have stress sensitivity of permeability.

Laboratory experiment of dry gas injection in super low-permeability carbonate fractured reservoir.

The low-porosity and low-permeability tight sandstone reservoir is a complicated kind of reservoirs.

Bonan oilfield is a typical high pressure and low permeability reservoir in Chinese low permeability oilfield.

Fault block Liu 17 is the main reservoir of Liuxi Oil Field, and is a typical reservoir with multilayer, low porosity and low permeability.

Outside low permeability oil field in western of Daqing has "three lows" feature, well depth is deep and ground conditions are poor.

The Permian Shanxi Formation in Yulin Gas Field is a typical low porosity and low permeability lithologic reservoir.

and the impact of sulfur deposit is much more significant in low permeability and highly heterogeneous formation.

The distribution character of movable oil and irreducible oil in low permeability reservoir was presented.

A natural escape of hot fluids from the steam reservoir should be prevented by cap rocks with low permeability.

he characteristics of low permeability reservoirs are lower porosity, lower permeability and in homogeneity.

The Jilin oil field is typical low the oil field, water-in low porosity and low permeability injection development primarily.

A problem on nonlinear flow in low-permeability porous media is a basic one in exploiting low-permeability oil and gas fields.

Sandstone gas reservoirs in west Sichuan belong to low porosity and low permeability tight super tight gas reservoir.

The second class oil layer is characterized by decreased channel sand, increased sub layers, thinning single layer, low permeability.

Seepage flow patterns and water driving characteristics are special in deep low permeability oil layers.

How to develop low permeability reservoir efficiently is of great significance.

Well logging evaluation emphasizes differently according to different types of low permeability reservoirs.

Water lock effect will bring harm to low permeability reservoir and impair reservoir productivity.

Statistic of sample data identify that the reservoir has low porosity and low permeability.

Then a new evaluation method of producing degree is developed for low-permeability heterogeneous reservoirs.

The oil displacement efficiency can increase 11% when an antifriction-agent displacement is applied in the low-permeability model.

A stimulation treatment routinely performed on oil and gas wells in low-permeability reservoirs.

Through single rock test shows that: for carbonate rock with very low permeability , it is hardly can form deep penetrated wormhole.

Low permeability reservoirs in Liaohe oil province have abundant oil reserves and good oil property.

The research is instructive in low permeability gas horizontal wells development.

Five wells net can establish an effective pressure displacement system, the uhr a-low permeability reservoirs single well production.

Obvious stress sensitivity exists commonly for low-permeability rocks.

Well test design theory of low permeability gas reservoirs is stated systematically and detailedly.

Fuyu reservoir is characterized by low porosity, low permeability and low abundance.

The breakthrough of gas usually occur during low permeability reservoir development, that lead to recovery efficiency fall.

It plays an important role to develop the low permeability oil field in advancing Chinese oil industry.

TunLiu coal mine, coal for high and low permeability, has certain outburst dangerous.

Otherwise, unmodified development contradictions will appear in the late development stage and limit development level of low permeability.

So it is necessary to further study on well test design theory of low permeability gas reservoirs.

The factors including clay content & calcite cement have an important effect on the stress sensitivity of low-permeability rocks.

CMC-containing mud makes a well wall a thin, hard and low-permeability filter cake to reduce water loss.

It will possess the certain applied value to use this method in exploration and development of low permeability gas reservoir.

It was applied in certain block of Wendong low-permeability sandstone reservoir.

A way of improving the development effect on the waterflooding of the low permeability oi. . .

The deep gas reservoir in Dongpu sag has features of deep, fine lithology, tight, thin, low porosity and low permeability.

The stimulation treatment in low-permeability sour gas reservoirs has been tested and explored for a long time.

Youquanzi oilfield is a shallow low production reservoir with low permeability and low pressure.

The economic and high efficient development of reservoir with low permeability has to use hydraulic fracture technology.

Generally speaking, the reservoir is the one with low porosity and low permeability.

Tongzhuang fault block is a low permeability, micro fractured reservoir.

Wangguang Area of Wangchang Oilfield is a lithologic sandstone reservoir with low permeability and thin layers.

Permeability recovery reached 78% and 85% for low and very low permeability cores respectively.

During the development of low permeability reservoir, interaction between fluid flow and rock deformation is obvious.

Low permeability reservoirs compare with high permeability reservoirs is more complex, and more difficult to development.

in the humid environment, the use of the base material of low permeability.

This provides a new path for making use of resource and enhancing oil recovery in very low permeability reservoir.

To this end, people have to shift attention to low-permeability oil and gas resources.

Therefore, the study of low permeability reservoir of CO2 injection ability on improving the efficiency of gas injection is very important.

And we give the chart of water cut and recovery percent, which suitable for Low Permeability Oilfield on the basis of tong's chart.

Wave impedance inversion for low permeability lithologic reservoir in Shu 2 7 28 area is implemented incorporating seismic and logging data.

The results show that all kinds of the fracture fluid filtrate may damage the extra-low permeability reservoirs.

The development of horizontal wells in the low permeability oilfield is a complex and valuable engineering technology.

Fuyang oil bed in Zhou201 block is a low permeability reservoir bed.

Fuyang oil bed in Chao503 block is a low permeability reservoir bed.

Jingbian Gasfield is a low-permeability gas reservoir with strong heterogeneity and it is difficult to verify its productivity.

Interlayer interference for low permeability thin interbedded reservoirs is becoming more and more serious in JS Oilfield.

In addition, the fluid flowing boundary extends outwards continuously with time is the remarkable feature of low permeability reservoirs.

Fracture plugging in the low permeability reservoir of Chang 6 in Zhengjin oilfield.

The problem of low permeability bottom water reservoir fracturing hasn't been solved well and the related reports is very few.

The study has applicable value for well test analysis in the low permeability reservoir.

The work in this paper will give a guide for surfactant flooding in low permeability reservoirs.

The development of extra-low permeability reservoir plays an important role in oil industry.

Petroleum researchers both at home and abroad always pay much attention to the development of low permeability oil reservoir.

Pertaining to a rock that is incapable of transmitting fluids because of low permeability.

Block Huan 26 and Xinhuan 27 in Huanxiling oilfield are water flooding low permeability reservoirs.

Aim To study the water displacing oil efficiency of weak oil-wet low permeability reservoirs, displacing process and affecting factors.

It is abound of geologic reserves of low permeability fields in China, Which is about 26. 9% of land proven reserves.

With the development of petroleum industry in China, the proportion of low permeability oil fields in development is more and more large.

The Fracture Characteristics of an Extra Low-Permeability Sandstone Reservoir and Its Identification Method with Conventional Well Logging

Calculation of Responding Time of Waterflooding in Low Permeability Sandstone Reservoir Through Introducing Start-up Pressure Gradient

A Low-Permeability Case Study of 5 Years of Continuous Well-Performance Improvement

Study on the capillary number of the ultra-low interfacial tension displacement system in low-permeability homogeneous reservoirs

Shanshan, Qiulling and Wenmi oilfield in Tuha basin are typical low permeability and low viscosity oilfield in our country.

The gas injection displacement has the best effect in the long core experiment of low permeability and single pipe;

Sensitivity of Two-Phase Non-Darcy Flow of in Low-Permeability Heterogeneous Reservoirs

Productivity prediction of a horizontal gas well in low-permeability gas reservoir under different well completion forms

A Method to Determine the Effective Production Time of Low Permeability Condensate Gas Well

Analysis of two-phase percolation of a horizontal well in low-permeability porous media

A study of characteristics of low permeability formation with water flooding using micromodel experiment

A Study for Predicting Water Breakthrough Time of Oil Well in Low Permeability Bottom Water Reservoir with no Barrier

Study of Unsteady Flow of Non-Newtonian Power Law Liquid in Horizontal Wells of Low Permeability Reerrvoir

The Data Analysis of a Very Low Permeability Well After Formation Hydraulic Fracturing

A Profile Modification Agent for High Temperature, Low Permeability and Naturally Fractured Sandstone Oil Reservoirs and Its Use

Nuclear magnetic resonance technology in percolation study of low permeability reservoir in Tuba Basin

Experimental study of feasibility of gas injection recovery in ultra- low permeability reservoirs

Log reservoir fluid identification method and its application to low permeability reservoir description

Experimental study of spontaneous imbibition in low-permeability reservoir

Imbibition Mechanism of Low Permeability Fractured Sandstone Reservoir and Its Mathematical Model

Profile Control and Displacement Method as an Important Means for Stable Oil Production by Water-Cut Control in Low Permeability Reservoir

Percentage parameter of the movable fluid in ultra-low permeability reservoir and its application

Estimation of the connectivity between oil wells and water injection wells in low-permeability reservoir using tracer detection technique

Single-phase seepage test demonstrates that there exits kick-off pressure gradient in Honghu reservoir with low permeability core;

A New Percolation Model Used for Low Permeability Porous Medium

Aeolotropism and its exploitation significance of Chang 21 low permeability sandstone reservoir of Yanchang Formation, Shunning Oilfield

Study of Reasonable Production Rate in Abnormal High Pressure and Low Permeability Reservoirs

The Experiment Study of Hydrocarbon Gas Injection in Low Permeability Volatile Reservoir

Study of Recovery Rate of Horizontal Wells in Surpressure, Low - Permeability with Basal Water Reservoir

Study of the Reasonable Ratio of Space Between Wells and Rows in Low Permeability Reservoirs

Lithologic Log Identification Method of Low-permeability Sandstone Reservoir and Its Significance

Feasibility analysis for shortening test time of low permeability reservoirs

Method for determination of hydro-geological parameter of aquifers with low permeability and its application

Simulation Trial Research on Increasing Hydraulic Fracturing Efficiency of Low Permeability Reservoir by Oriented Perforation

Study of extended fracturing technology for Daqing low permeability oilfield

Study on Apparent Permeability of Non-darcy Flow in the Low Permeability Reservoir and Its Influence on Reservoir Development

Micro-heterogeneity of deep, high-pressure and low-permeability reservoirs and its influence on development

Rock-electric Experimental Result Study of Low Permeability and Low Porosity Sandstone

Waterflooding in High Pressure and Low Permeability Reservoirs in Dongying Depression and Its Practice

Electricity experiment study of low-permeability reservoir

Spontaneous imbibition mechanism of flow through porous media and waterflooding in low-permeability fractured sandstone reservoir

Laboratory Research on Low-damage Fracturing Fluid for Low-permeability Gas Reservoirs and Its Application

Study of the Mechanism of the Oil Displacement in Low-Permeability Reservoirs

Study of Damage Mechanism of Underinjected Formations in Water-Injecting Wells of Low-Permeability Reservoirs in Bonan Oilfield

Technology of effectively enhancing recovery efficiency in thin-interbedding reservoirs of low-permeability sandstone

High-pressure and Low-permeability Reservoir Reconstruction Technology and Its Application in Deep Permian in Xiazijie Region, Junggar Basin

The electrolytic simulation experiment research of fractured horizontal well's productivity in low permeability reservoirs

Designing study of created fracture and re-fracturing in Maxi deep low permeability reservoir

Multivariate Plug Removal Technique Used in High Pressure and Low Permeability Reservoir

Systematic Techniques for Low Porosity and Low Permeability Reservoir Reconstruction and Their Application in Western Qaidam Basin

Experimental study and analysis of the special percolation mechanism in low permeability sandstone gas reservoir

Study of high pressure packing sand control technology in low permeability reservoir

Physical simulation and numerical simulation of ultra-low permeability reservoir in consideration of starting pressure gradient

The Characteristics of Low Permeability Reservoir in Jurassic in Junggar Basin and Discussion of Its Origin

Analysis of the effectiveness and characteristic of polymer flooding in low permeability narrow strip sand reservoir

Testing study of methane drainage by bore and hydraulic-cutting seam from low permeability coal seam

Variation of the Permeability of the Low-permeability Sandstone Reservoir Under Variable Confined Pressure

Formation Damage Mechanisms of Low-permeability Gas Reservoir and Its Preventive Measures

Method of Evaluating Low-permeability, Fractured Carbonate Reservoirs with Conventional Logging Techniques

Numerical Simulation of Changes of Porosity and Permeability during Low Permeability Fractured Oil Reservoir Development

Development and Methods of Removing Retrograde Condensate and Water Blocking Impairment in the Low Permeability Condensate Gas Reservoir

Research on improvement of water-injection technology in low porosity and low permeability reservoir and its application

Influencing factors of displacement and development characteristics in ultra-low permeability oil reservoirs

Experimental study on improving recovery of low permeability fracture-type carbonate oil reservoir by pulse hydrocarbon injection

Research on Fracturing Optimization for Shallow Gas Reservoirs with Low Permeability, Low Temperature, and Water Sensitivity

Stress sensitivity of super-low permeability reservoirs and its influence on the productivity of oil well

Evaluation of Production Increasing Effect of Vertical Hydraulic Fractures in Low-permeability Oilfields by Numerical Simulation

Screening, Performance evaluation and site application of paraffin thirsty bacteria in low permeability reservoir

The Calculating Method for Effectively Producing Injection-Production Well Spacing of Low Permeability Reservoirs

Reservoir Parameter Variations in Low Permeability Reservoir during Production by Waterflooding

Practices in Developing Fractured Ultra-low Permeability Reservoirs by a Rectangular Well Pattern

Low Permeability Condensate Gas Well, Retrograde Condensate, Reverse Imbibition Damage and Removing Methods

Application and Cognition of Deep Penetration Compound Perforation Technology in Low-permeability Oilfields

Effective development technique for peripheral reservoirs with ultra-low permeability and ultra-low abundance in Daqing Oilfield

Optimization design of integral hydraulic fracturing for skewed patterns in low-permeability complex faulted reservoir

Production characteristic and influencing factors in the waterflooding of low - permeability oilfields

Treatment of Deformation Effect and Selection of Reasonable Producing Pressure Differential for Low-permeability Gas Fields

Experimental study on seepage flow law of fractured low permeability reservoir

Applied study of depth-pumping with small diameter pump in low-permeability reservoir

Stationary Flow Injection Technique Applied to Low-permeability Oilfield

Hydrocarbon identification of the deep-seated reservoirs with low porosity and low permeability from well logs in Biyang sag

Damage to Low-permeability Reservoir by Water Locking Effect and Its Inhibiting and Removing Methods

Experimental study on enhancing oil displacement efficiency of waterflooding in ultra-low permeability reservoir

The evaluation of development potential in low permeability oilfield by the aid of NMR movable fluid detecting technology

Techniques for oil increasing of extra-low permeability Triassic Yanchang Formation, Ansai Oilfield, Northern Shaanxi

Development countermeasure in low-permeability heavy oil reservoir with high temperature and strong water-sensitivity

Formation Damage and Protection during the Production of Low Permeability Reservoirs in Kenli Oilfield

Selection of reasonable drawdown pressure with consideration of deformation effect for low permeability gas reservoir

Application of Specifications for Measuring Oil-water Relative Permeability in Low Permeability Reservoirs

Complex Exploration Techniques for the Low-permeability Lithologic Gas Pool in the Upper Paleozoic of Ordos Basin

A Study of the Production Decline Law in Low Permeability Reservoirs

Experimental study of viscosity effect of low permeability reservoir

Optimization design of integral fracturing parameters for low-permeability highly faulted reservoirs

Types and Distribution of the Remaining Gas in Low Permeability Sandstone Gas Reservoirs in West Sichuan Depression

Application of Artificial Fracture Real Time Monitoring Technology with Borehole Seismic Receiver in Low Permeability Gas Well

Study on transient flow regularity in low permeability reservoirs with consideration of injection - production ratio

Nonlinear percolation feature of low permeability reservoirs and its effect

Flow Analysis of Fluid in Low Permeability Reservoir with Double Porosity Including Effects of Quadratic Gradient Term and Moving Boundary

Practice of Using Deep-hole Presplitting Blasting Technology to Drainage Methane from Extremely- thick Coal Seam with Low Permeability

Structural fracture prediction and aperture analysis for low permeability sandstone reservoir

A new method of determining relationship between permeability and effective overburden pressure for low-permeability reservoirs

Research and Application of Emulsified Fracturing Fluid in Low Permeability Strong Water Sensitivity Formation

Research and Application of Fracturing Technologies in Low Porosity and Low Permeability Reservoirs in Biyang Depression

Stimulation Technology Improvement for Low Permeability Reservoirs

Genesis study of low porosity, low permeability, lithologic reservoirs in Daqingzijing area

New Technique of Gas Water Recovering Together for Low Permeability and Bottom Water Reservoir by Perforating Water-Bearing Formation

Characteristics of Permeability and Porosity of Low Permeability Porous Media Under Formation Conditions

A Study on the Mechanism of Electrochemistry Oil Displacement Field Improving the Recovery Factor of Low-Permeability Reservoirs

Fracture Identification through Conventional Logging in Deep Reservoirs with Low Permeability and Low Porosity in Biyang Sag

Relation Between the Productivity and the Degree of Development of the Fractures in Low Porosity and Low Permeability Sandshale Reservoirs

Characteristics and Mechanism of Low Permeability Clastic Reservoir in Chinese Petroliferous Basin

Profile Modification by Hydrophobic Associating Polymer System in Low Permeability Reservoir