drilling fluid

Gas drilling fluid is often used in UBD in low pressure formation.

BP said late Thursday it had temporarily halted the pumping of heavy drilling fluid, or 'mud, ' into the well.

After reaching the reservoir the composition of the drilling fluid may have to be changed to avoid clogging the pores of the rock.

the high-speed flow of drilling fluid in the bottom was little affected by the gravity.

The organisms used in bioassays are those found in the area that would be most affected by contact with the proposed drilling fluid.

The potential for biodegradation is commonly measured on drilling-fluid products to ensure that they do not persist in the environment.

If the weight of the drilling fluid is too great it could cause the rock to fracture and the drilling fluid would be lost into the ground.

Analysis and interpretation of this core sample were used as the basis for a new drilling fluid design.

The invention discloses a high-temperature resistant polymer viscosity reducer for drilling fluid and a preparation method thereof.

when wellbore pressure is less than formation pressure, some drilling fluid still flows into the fracture.

At present, drilling fluid pulse is mainly used to transmit signals between ground and downhole in wireless information system.

It is one of the technical problems in the field operation to choose the drilling fluid rheology model.

In the case of an underbalanced kick, the driller must circulate the influx out and increase the density of the drilling fluid.

This paper presents the working principle, structure, characteristics of viscometer at a high shear rate of drilling fluid.

Drilling fluid whose bulk, unpressurized density is reduced as a small volume of gas displaces an equivalent volume of liquid.

The authors will discuss the design of these drilling fluid additives and their impact.

Kraft lignin must be further reacted to make a functional drilling-fluid additive.

the void factor of micro foam drilling fluid tapers with increasing of the pressure and increases with the increasing of the temperature.

Influence of joint high temperature and pressure to drilling fluid performance should be overcome to make sure a fast and safe drilling.

The device used to facilitate the addition of drilling fluid additives to the whole mud system.

Filed applications show that the measured signal quality is maybe affected by well depth, drilling fluid properties and mud motors, etc.

The solid free polymer drilling fluid is a type of drilling fluid system with strong capability of both rejection and preventing collapse.

The drilling fluid used in petroleum and geology exploration was monopolized by anion-type mud system.

An ampholytic sulfonated phenol formaldehyde resin ASP- Iwas prepared. Its drilling fluid performances were evaluated.

A water-base drilling fluid that contains dispersed oil or synthetic hydrocarbon as an internal phase.

The tensile force is applied either mechanically by rotating the fishing string or hydraulically by the drilling fluid.

So, taking influencing factors into consideration can give references to confirm the density window of safe drilling fluid correctly.

It is unavoidable to have large amount of oily cuttings generated from using oil base drilling fluid.

The drilling fluid will harm soil, crops and underground water. The waste liquid from downhole operation will pollute the surroundings.

The drilling fluid additives helpful for flocculation in cement slurry are chosen as future drilling fluid additive candidates.

An inverted "U" shaped section of rigid piping normally used as a conduit for high-pressure drilling fluid.

The automatic remote mud rheometer is controlled by computer and can automatic detecting circle drilling fluid rheology in real time.

The calculation results showed that subsystem, displacement and drilling fluid system have grate effect on annual flow parameters.

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

Air drilling and solid-free gelatin drilling fluid can be used in coal-bed methane drilling.

The prediction model established provides a new method for reasonable density range determination of field drilling fluid.

BP wanted to remove an unusually large amount of the thick drilling fluid called mud from the well and then run the test.

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

Preparation, control and maintenance for emulsified drilling fluid will directly affect the forecast on oil and gas.

At high temperature and high pressure (HTHP), the density of water-base drilling fluid is not a constant any more.

Wettability reversal agent is an important additive for oil base drilling fluid.

PHP CFH MMH composite drilling fluid is optimized, especially for drilling in sub deep wells and high concentrated deep wells.

The property of the drilling fluid is evaluated. Its excellent property is demonstrated.

The environmental pollution caused by waste drilling fluid is a problem hard to be solved.

Meanwhile, the mechanism of MMH drilling fluid protecting fractured reservoir is analysed.

The density of a drilling fluid is a key parameter to keep the borehole stable.

This paper introduced the oversea classification of drilling fluid systems and additives.

Drilling fluid systems suitable for different formations were optimized.

Film-forming resin FGA, a saturated carbon-chain non-ionic polymer, can be used as anti-sloughing a-gent in drilling fluid.

The rotary steering tool studied in this paper is powered and cooled by drilling fluid, it's reliable and has simple structure.

The component of waste drilling fluid was analyzed and the effects of drilling fluid on the performance of MTC was investigated.

Some drilling fluid materials become colloidal when used in a mud, such as bentonite clay, starch particles and many polymers.

Some clays are used in drilling fluids to form an impermeable mud cake to isolate a formation from the invasion of drilling fluid.

Exploit a new. direction for the. drilling fluid defend hydrocarbon reservoir.

The Karson model is the main model for description of the rheologic properties of the drilling fluid.

Under the condition of HT and HP, the density of water-base drilling fluid will not be a constant.

Solid free polymer drilling fluid was used in the fourth interval.

The properties of drilling fluid for drilling horizontal side-tracked slim hole were analyzed.

Meanwhile, the paper proposes that using oil-base drilling fluid can prevent the reservoir damage.

drilling fluid use and drilling waste disposal issues are of primary importance.

Recognizing and interpreting methods of oil and gas under drilling fluid "pollution"

The effects of membrane efficiency become obviously at low water activity of drilling fluid.

Its results indicates that all indexes of drilling fluid are good and can meet the needs of drilling engineering.

The measuring instruments of drilling fluid should meet the requirements.

Spraying or continuous injection to control foam in water, brine or water based drilling fluid.

These experiments and analyses provide useful references to development of marine deep water drilling fluid.

If high solid drilling fluid leaks into formation , it should damage reservoir .

When the screw is tightened, the collars are tensioned, and the high pressure of drilling fluid will increase the tension force.

This paper also discusses the engineering of the new drilling fluid.

Waste drilling fluid is the main pollutant in oil and gas exploration.

Mix drilling fluid, and ensure the mud properties should meet the requirements.

During wellsite drilling, comprehensive logging will be affected by putting lubricant into drilling fluid.

The relation and difference caused by density difference of drilling fluid solid phase between these two expressions are given.

The speed the drilling fluid attains when accelerated through bit nozzles.

Drilling fluid rheology plays an important role on deepwater well drilling.

Based on the lab experiments, reservoir protection characteristics of silicate drilling fluid were studied.

The drilling crew shisl follow the drilling fluid program am (type each density) specified in the engineering design.

The developing trend for the polymer drilling fluid additive is also proposed.

Through laboratory test, the drilling fluid system for the well was selected optimally .

This allows the drilling fluid to suspend cuttings when drilling stops .

Moreover, JLX can thin viscosity of polymer mud, and reduce filtration loss of polymer drilling fluid above the cloud point temperature.

The result will be significant to the application of high density drilling fluid to the drilling site.

Development of drilling fluid technology during the "Ninth-five-year"

The drilling fluid may interact with the surrounding rock in other ways.

By using computer technology, an open computer ES for drilling fluid design was built.

In order to solve environmental pollution, increase production of oil and gas and economic benefit, polyalcohol drilling fluid is developed.

This paper introduces the application of polyol drilling fluid in Hongtai area of Tuba oilfield.

This article introduces the laboratory test, pilots scale production and field experiment of main polymer CT3-12 for drilling fluid.

Therefore, a kind of high-density, weak-gelled, non-bentonite and oil-in-water drilling fluid system is developed.

Methyl silicone oil polysulfonate drilling fluid.

The heteropoly glucoside biological drilling fluid is a new drilling fluid.

In order to make fast drilling, protect the reservoir and reduce the cost, an optimized drilling fluid technique is recommended.

Equivalent density is the drilling fluid that can balance the formation pressure.

If only raising drilling fluid density to prevent hole sloughing, it will lead to slow penetration rates and long drilling cycles.

The drilling fluid is described by Casson fluid.

This paper summarized the development of drilling fluid additives made from coal humic acids, and discussed its developing tendency.

The study and application of water soluble natural material modified drilling fluid additives are introduced.

With the development of deep well and ultra deep well technology, the reclaiming of waste drilling fluid is gradually emphasized.

The movement of cuttings in the drilling fluid is very complicated. It is difficult to get the parameters by analytical method.

The round tank of the system has about 100 percent of effective volume, which can make the drilling fluid mixed evenly.

The study shows that increasing drilling fluid density can slower undergauge creep effectively.

The priority is on keeping the exposed rock formation in the borehole stable while avoiding the loss of drilling fluid.

And PSADH also can be used as flocculant and viscosifier for drilling fluid.

This two kinds of polymer film forming drilling fluid system have a good synthetic wall protected effects to the water-sensitive strata.

Drilling fluid system in two short radius horizontal wells Well He 90 Ping 1 and Well Pan 40 41 Ceping 1 in Shengli Oilfield is introduced.

Application Analysis of the Standards for Additives Used for Drilling Fluid

Polymer drilling fluid with composite metal and amphoteric ion used for reservoir protection

Preparation of Cationic Starch with a High Degree of Substitution and Its Performance as Filtrate Reducer for Drilling Fluid

Some Problems in the Conversion of Technical Standards for Bentonite Used for Drilling Fluid

Study and Application of a Strong Inhibitive Drilling Fluid KCC-TH

Study on Mechanism of Reservoir Damage at Bamianhe Oilfield and the Drilling Fluid Technology Used for Reservoir Protection

Improvement of testing method of polyacrylamide used for drilling fluid

Experimental study of the high-density salt water drilling fluid with high-temperature resistance for deep wells

Present state of environmental drilling fluid and its development direction

Experimental Study of an Environment Protected Drilling Fluid

Experimental Study of Preparing Drilling Fluid Treating Agent Solution with Diesel Wetting Method

Complex Solidification Technology for Treatment of Waste Drilling Fluid and Its Engineering Application

Laboratory Study on a Annulus Rheologic Properties Improving Agent Used in Seawater Drilling Fluid

Laboratorial Study of A Solid-free Weak Gelled Drilling Fluid

Present State of Offshore Drilling Fluid and Its Development Direction

Application Experiment of Drilling Fluid Screening Temporary Blocking Technique in Northern Shanxi Exploration Region

Performance Properties and Application of a Silicone Drilling Fluid

Study and application of the temperature tolerant and salt resistant polymer drilling fluid for horizontal drilling

Experimental Study of Potassium Silicate Drilling Fluid System

Synthesis and Evaluation of a Amphoteric Copolymer HTB as Drilling Fluid Additive

Drilling Fluid Technology and Its Application in Oil And Gas Wells Drilled with Gas Fluids in Northwestern Sichuan

Setting-up a Model to Evaluate the Invasion of Drilling Fluid Filtrate to the Formations in Horizontal Wells

Overview of low temperature formation characteristics while drilling and available drilling fluid technology

Identification of Oil Show When Organic Additives Used in Drilling Fluid and Evaluation Methods

Study of Formation Protection Lost Circulation Drilling Fluid

Biodegradability evaluation of organic additives of drilling fluid used in sea boring

Appraise for Highly Active Frothing Agent ZQP Used for Drilling Fluid

Study of the automatic controlled system of the drilling fluid vacuum distill degas

Polyether polyatomic alcohol drilling fluid and its application

Research on Environmental Protection Performance of Polyalcohol PPG Drilling Fluid Additives

Viscosity-temperature and viscosity-pressure relation characteristics of foam drilling fluid

Petroleum and natural gas industries -- Drilling fluid materials -- Specifications and tests

Studies on the Inhibitive Character and Its Influence Factors of Silicate Drilling Fluid

The Research and Apply of the System of Drilling Fluid Hydraulics Optimized Design

Discussion on horizontal well drilling fluid technique and its practice in Tahe Oilfield

Shielding Temporary Bridging Drilling Fluid for the Natural Gas Reservoir in Fuxian Exploration Area of Shanbei

Evaluating the hole stabilizing performance of silicate-based drilling fluid with pressure transmission test

Numerical simulation of drilling fluid invasion and electrical logging measurements in highly-deviated wells

Analyses on Calculation Methods of Rheological Parameters of Drilling Fluid and Optimization of Rheological Model

Experimental research on collapse prevention mechanism of polymer drilling fluid for oil shale exploration in Jilin, China

Present state of drilling fluid systems using in the deep exploratory wells in Daqing oilfield

Principles Controlling the Rheological Property and Wall Building Property of Deep Well High Density Water-base Drilling Fluid

Discussion on Assessment and Analytical Method of Environmental Protective Performance for Drilling Fluid

LPS polyatomic silicon-based drilling fluid improves the cementation strength between interfaces

A Novel Data Processing Method for Measuring Relative Molecular Weight of Polymer Drilling Fluid Additives by Viscosity Means

Mathematical Models Forecasting the Formation Impairment Induced from Drilling Fluid

Design of a system for drilling fluid recovery, purification and reuse

Application and research of a novel polymer in high density drilling fluid

Lab Evaluations and Applications of the Polymeric Alcohol Slough-proof Drilling Fluid System

Study on Sealing Characteristics of Oil based Drilling Fluid and Its Application

Optimization of bridging particle size distribution of drilling fluid for formation protection

Determination of biological toxicity of drilling fluid and completion fluid by photobacteria method

Extended Application of Inhibitive Potassium-Ammonium Polymer Drilling Fluid

Study and application of the solids free and high temperature tolerant drilling fluid in Shengli oil field

An investigation of formation protection mechanisms of composite metal polymer drilling fluid

Progress of the mechanism and characteristics of polyglycol-based drilling fluid

Experimental Research on the Instability Prevention Mechanism of Polymer Drilling Fluid

Calibration Methods of Gas Detection Material under Different Drilling Fluid Conditions

Application of polymeric alcohol drilling fluid technique to Shengli petroliferous area

Study and application of environmental friendly and reservoir protection drilling fluid

Effect of temperature and pressure on fluid column pressure of wellbore drilling fluid in deep-water drilling with oil-based drilling fluid

Study on Three-phase Micro-Foaming Drilling Fluid System and Its Field Application

Performance Evaluation and Application of New Polyol and Polyol Water Base Drilling Fluid

Mathematical methods for laboratory studies on drilling fluid and formation damage and protection

Development of collapse-preventing drilling fluid and its application in Tahe Oilfield of Xinjiang area

The Drilling Fluid Techniques Used in Pilot Hole and Hole Opening Operation of CCSD

Mechanism study on Ultra-low Invasion Drilling Fluid for improvement of formation pressure-bearing ability

Research on drilling fluid technology for slim hole in deep wells and its application

Relaxation measurements to evaluate cuttings carrying capacity of drilling fluid

Simulation Study on How the Density of Foam Drilling Fluid Varies with Well Depth

A Positively Charged Gel Drilling Fluid for Lateral Horizontal Wells and Its Uses

The Solidification Treatment Experimental Research on Waste Drilling Fluid

A drilling fluid rheological parameter calculation software and the rheological model's optimization

Research and Application of Salt-resisting and High Temperature Resisting and Water Base Drilling Fluid System

Drilling fluid and completion fluid technology for reservoir protection: present and future

Evaluation and Application of High Temperature-Resisting Filtrate Loss Reducer JHW for Drilling Fluid

Optimization of the Formula of Drilling Fluid Used in Oil Reservoir of Group Dongying, CB32

Microprocessor-Based Measuring Lubricity of the Drilling Fluid

Evaluation Method of Drilling Fluid Environment Characteristics

Study on temporary blocking reservoir protection technique of modified drilling fluid

Drilling fluid and completion fluid for protecting fractured carbonate rock reservoir

A Polyglycol Drilling Fluid Used in Drilling Horizontal Wells

Study of Filtrate Reducer Laws in Water-in-Oil Emulsion Drilling Fluid

Study and application of ultra-low permeable drilling fluid: lost circulation prevention and control

Drilling fluid technology for the high inclined directional well in Zhongyuan Oilfield

Predicting safe drilling fluid density range before drilling by seismic fractal attributes

Application of A New Drilling Fluid Flow Pattern Regulator

Enhancing Quality of Two Interfaces of Cementing by Using Upgraded Drilling Fluid

Establishing of drilling fluid environmental monitoring system in urgency

Application of Compound Polymer Drilling Fluid in Exploration Engineering

Technological Difficulties and Application of High Density Drilling Fluid

Field application of aluminium compound-potassium Chloride drilling fluid

Laboratory Study of Silicate Drilling Fluid

Effect of drilling fluid system and its viscosity on gas measuring borehole logging

Multiphase simulation technique of drilling fluid pulse transmission along well bore

Recent Advances in Overseas Drilling Fluid Systems and Technologies for Non-Conventional Wells

Drilling fluid and completion fluid technology for formation protection in Hanan oilfield

The Influence of the Modified Vegetable Phenol-Sulfates on the Drilling Fluid's Inhibitor

Study on three-phase circular micro-foam drilling fluid technology and its application in Cainan oiifieid

Biodegradable Characteristics of Drilling Fluid Organic Additives in Sea Water

Determination of Synthetic Biological Toxicity of Drilling Fluid by Method of Photogenic Bacteria

Development of New Activity Agent of Barite and Its Assessment in Sea Water Drilling Fluid

Quality Supervision Measures of the Drilling Fluid and Completion Fluid

waste drilling fluid; solid-liquid separation; process; equipment;

Organo-silicon Enriched Drilling Fluid Technology in Deep Exploration Well Drilling

Research on synthetic drilling fluid and its application

A Method to Determine the Safe Density Window of Drilling Fluid Using Well Logging Data

Synthesis and Properties of Heat-Resistant and Salt-Tolerant SIOP Polymer Additives for Drilling Fluid

A Study of Shale Stability of Water-base Polyethylene Glycol Drilling Fluid

Method of Quantitative Fluorescence Evaluation on Drilling Fluid Additives

Application of sulfonated and oil-mixed positive gel polymer drilling fluid in the horizontal well with long open hole

Selectivity of synergistic effect between inorganic salts and polyacrymides on destabilization of waste MMH drilling fluid

Stability evaluation of foam drilling fluid using light backscattering theory

Study on the Correlation Between Borehole Surrounding Rock Damage and Drilling Fluid Density

Research on the changing tendency of zeta potential of the clay minerals and drilling fluid

Technical Challenges and Solutions of Drilling Fluid Techniques in Deep and Ultra-Deep Wells in Tahe Oilfield

Synthesis and Evaluation of Polymeric Alcohol JHG Used as Anti-sloughing Lubricant for Drilling Fluid

Application of "Dual Protection" Drilling Fluid Technique with Positive Charge in Lungu Area

Seawater drilling fluid technology in Shengli Oilfield-its forming and development

Lost circulation and kick control aerated drilling fluid technology used in WangGu1 well

gas drilling; gas-liquid transformation; drilling fluid; process;

salt water drilling fluid; inhibitive; hole sloughing prevention;

Evaluation on fluorescence properties of drilling fluid additives

Development and application of casing stuck releasing device by charging drilling fluid

Laboratory study on high temperature organosilicon drilling fluid

Drilling fluid and completion fluid technology for formation protection in MTZ oilfield

Analysis of the influence of oil emulsion drilling fluid on geochemical logging

Development and application of drilling fluid in controlling formation damage of Jilin oil field

Application of Nitrogen aerated drilling fluid technology in horizontal well

Understanding and pondering over fluorescence problem of drilling fluid additives

Application of Polymer Anti-caving Drilling Fluid in Directional Geothermal Well in Tianjin

Drilling fluid technology for challenging formation in New Regions of the West

Drilling fluid instant sealing technology for formation damage control

Development and Application of Multi - hydroxyl Polymer Drilling Fluid

An investigation in percent through screen of layer vibrating screen on shale shaker for drilling fluid

Particularity of Coal Collapse and Drilling Fluid Countermeasure

Brief Discussion on the Treatment of Waste Drilling Fluid by the Underground Salt Cave

Interpretation Standard of Mudlogging Gas Detection under Different Drilling Fluid Condition

Study of Drilling Fluid of Low Density and High-inhibition

Logging Evaluation Mechanism of Reservoir Pollution Level by Drilling Fluid

Application of aluminum based polyalcohol drilling fluid in Liaohe oilfield

Laboratory Research of MMH Drilling Fluid Protecting Natural Gas Reservoirs

Study and Application of Natural Material Modified Drilling Fluid Additives

A New Method for Evaluating the Effects of Drilling Fluid Filter Cake on Bond Quality of the Second Cementing Interface

Application of Positive Colloid Nano-emulsion Drilling Fluid in Shengli Oilfield