bottom hole

One of the main reasons of the well deviation in the gas drilling is dynamic characteristics of the bottom-hole assembly (BHA).

The physical and mathematical models of the bottom hole fluids with the heat transfer are established, analyzed, and rectified.

It is usually taken to be the bottom hole temperature for use in log interpretation.

Less the initial sulfur content is in the bottom hole, closer the sulfur separation place is to the wellhead.

The bottom hole assemblies used for the two case wells are displayed in Fig. 3.

On the basis of the key parameter on the length of annular pseudo gas column, BHP(bottom hole pressure)can be calculated.

Validity and feasibility of the finite difference time domain method is demonstrated by the echo-wave signal of a flat bottom hole block.

Fifth, a relatively stiff bottom hole assembly may not easily fit through the dogleg section drilled with a relatively limber BHA.

The flow rate of reservoir crude depends on bottom-hole pressure, reservoir pressure, rock permeability, and the viscosity of the oil.

The IPR curve contains the maximum oil production when the bottom hole flowing pressure is below the bubble point pressure.

Therefore, how to calculate the bottom-hole pressure accurately is of technical and practical value.

The jar placement in the bottom hole assembly (BHA) will affect the jarring operation very severely.

The bottom hole strobe arranged in dam middle, undertakes the dam to flush the sand duty.

The boundary conditions at the upper tangent of the conventional bottom hole assembly can be expressed as: 1.

Due to various reasons, the part of drill string falls to cause the damage of bit and bottom hole assembly.

Selection of Downhole-Deployment-Valve and its running depth are closely related to the pressure at bottom-hole.

Please pull out of hole and change bottom hole assembly!

When bottom hole liquid increases in gas well, back pressure increases , and gas production is reduced.

Second, take K19 in Baka oil as example, commingling the production data optimized bottom hole choke, determine a reasonable choke size.

Computer simulation of drillstring axial vibration and online monitoring of bottom hole condition.

A new type bottom hole assembly is provided for drilling in high angle deviated and hard formation.

Bottom-hole Flowing Pressure Calibration.

Bottom hole pressure changes complicatedly in suction well of double porosity reservoir.

The flow-after-flow test is made by measuring several flow rates and their corresponding bottom hole pressures.

Finally, the varied bottom-hole pressure is calculated.

OD to 15 mm below tooth root , ie tooth zone . No indication exceeding that equal to 3 mm flat bottom hole at the defect beam path distance.

The sand bailer is also used as a bottom hole sampler.

Make up bottom hole assembly.

Regulation of the Bottom-hole Area Rocks'Filtration Parameters at the Late Stage of Field Development

Theoretical Model for a Well with a Finite-Conductivity Vertical Fracture on Constant Bottom-Hole Pressure

Application of the Bottom Hole Path CAD to the Rock Bit Insert Arrangement Design

analysis the debris at the bottom of the role of horizontal, which movement are cleaned from the flow field of the bottom hole;

Analysis of Kinetic Energy in Gas Well and a Bottom-Hole Flowing Pressure Calculating Method Considering Kinetic Energy Term

Application of a practical method for history matching of production rate and well bottom-hole pressure

Heat transfer study of bottom hole fluids in the fully hydraulic thermal exploiting process for viscous crude oil

Monitoring Bottom-Hole Pressure and Temperature in an Aerated Under-Balanced Drilling Well

Research of the Optimization of Bottom Hole Priming and Ground Breaking Technology and Spacing Pattern Parameters

Analyses and study of gravity dam bottom hole three-dimensional finite element stress

Dynamic Analysis of Bottom Hole Assembly with Eccentric Sub and Its Motion Simulation Research

a set of reasonable drilling parameters and full-size bottom hole assembly(BHA)designed;

Preliminary Study on Influencing Factors of the Forces and Trajectory Control for Bottom - Hole Assembly

Bottom-Hole Ejector for Elimination of Annulus Pressure Increase and Submersible Electric Pump Delivery Stripping

Application of selective perforation system for optimizing bottom hole production behavior

Analysis on Roller Cone Bit Bottom Hole Track Simulation Under Composite Drilling Conditions and Bit Improvement

Research on diameter ratio of pilot to enlarger of two-stage bits using bottom-hole stress field

Research on Motion State of Bottom Hole Assembly and the Evaluation Method of Drilling Tendency

The diameter and test metal distance of the flat-bottom hole and the material of the reference block in accordance with

Optimization on installment engineering of the operating gate of bottom hole sluice flood in the Three Gorges hydroelectric station

Exact Solution of Bottom Hole Pressure of Max Effective Hole-diameter Model for Confined Reservoirs with Two Pays

Calculation of Bottom Hole Pressure Considering Perforation

Application of Concrete Conveyed by Pump in Sealing Bottom Hole for Diversion Tunnel of Taoyuan Reservoir

Setting up a simulate device on motion behavior of bottom-hole assembly according to similitude principles

Optimal method of bottom hole assembly parameters design for controlling trajectory

Improvement of Machining Technique for Bottom Hole Edge Cutting Mould and Angular Former Block

Calculation Methods of Bottom Hole Pressure in Gas Wells in Shuangtuozi Area and Its Application

Interpretation of modified isochronal well test data with bottom hole liquid loading

Application of BP neural network for prediction of flowing bottom-hole pressure in flowing well

Effect of hydraulic factors on flow field at bottom hole of rotating drill bit and hydraulic optimistic design

Unified Oil Well Test Interpretation Model and Bottom Hole Pressure Solution

Drillability Test Study under Modeling Conditions of Bottom Hole Stress

Finite Element Analysis and Application on the Stability of Bottom-Hole Assembly

Numerical Simulation Research on Bottom-hole Crossflow Field

A practical method for history matching of production rate and well bottom-hole pressure

Effects of wellbore gap on transverse vibrations of bottom hole assemblies

Determination of Size of Female Thread Bottom Hole of Aluminum Work Pieces

Sensibility analysis of the factors affecting the stress level of bottom hole assembly

Research on Bottom Hole Flushing in Reverse Circulation Drilling

Suitable position of stabilizer at bottom hole assembly fitting an off-balance bit

A study on the settling stability of cement slurry in simulated bottom hole condition

The Technology of Bottom Hole Shaping by Increasing Weight Gradually on PDC Bits

On the Method of Gravel Pack Inwash in Bottom-hole Area and Installation of Metal Filter with Packer

Dynamic analysis of the hinged bottom hole assembly

Application of Offset - axes Bottom - hole Assembly in Qingxi Area

Advanced Bottom Hole Drilling Tools and the Rotary Steering Closed Loop System

Evaluation method of parameters design for bottom hole assembly

Automatic Control of Bottom Hole Pressure while Underbalanced Drilling

Study on Calculation of Water Inflow Rate of Bottom Hole of Gas Well with Water

Static Analysis of New Type of Hinged Bottom Hole Assembly

Study on computing method of bottom-hole flow pressure of gas well with high gas-liquid ratio

Strength analysis of bottom hole assembly with flexible sub

Bottom hole switch for reservoir protection of sandy wells

Simple Method of Calculating Diameter of Bottom Hole for Tapping

Measuring BHP(Bottom Hole Pressure) Testing with Jet Pump

A New Method for Three-dimensional Analysis on Bottom Hole Assembly

Research and Application of Artificial Bottom Hole With DX-1 Gravel Pack Hollow Structure

A new method for two-dimensional analysis on bottom hole assembly

balanced bottom hole pressure method

The Application of Bottom Hole Manometer in Tahe Oil Field

Bottom hole; Flowing pressure;

Numerical simulation on bottom-hole flow field of down-the-hole bit

Sediment deposit before the dam in Gongzui Hydropower Station and sediment flushing of bottom hole

Analysis of Effect of Bottom Hole Assembly on Whipstocking Capacity

Analysis of bottom-hole stress field of two-stage PDC bit

Application of Bottom-hole Detonation in Tauchong Iron-Mine

Bottom hole float type flowmeter

Numerical Simulation Study on Bottom Hole Flow Field of PDC Coring Bits

Numerical simulation on flow field of confined water jet at bottom hole

Status of experimental application and prospect of bottom-hole detonation technology in China

Forecasting the Sub-bottom Hole Pressure by use of Mid-course Logging Data

Connection of bottom hole type

Finite element model for analyzing stress field of bottom hole based on excavating method

stiff bottom hole hook up