Borehole track control method and borehole track control system

A wellbore trajectory and control method technology, applied in the direction of wellbore/well components, drilling equipment and methods, drilling equipment, etc., can solve the problem of affecting the control effect of the wellbore trajectory, affecting the operating efficiency and information transmission rate of the rotary steerable drilling system Low-level problems, to achieve the effect of reducing the amount of downlinked information, improving system reliability, and improving operating efficiency

Active Publication Date: 2012-06-13
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, the information transmission rate of the rotary steerable drilling system is still very low, therefore, frequent underground transmission will se

Method used

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  • Borehole track control method and borehole track control system
  • Borehole track control method and borehole track control system

Examples

Experimental program
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Embodiment

[0056] In the case of a given drilling geological target, the wellbore trajectory is designed according to the deflection capability of the rotary steerable tool and the drilling process requirements; the mechanical analysis of the BHA is carried out in combination with the BHA of the lower drilling tool assembly and drilling parameters, and the control of the rotary steerable tool under ideal conditions is determined. The relationship between the parameters (thrust or bending angle, tool face) and the lateral force or build-up rate of the drill bit, the analysis results or empirical values ​​are used as the initial value of the control parameters of the rotary steerable tool; Results The control parameters of the rotary steerable tool were adjusted to achieve the purpose of automatically controlling the wellbore trajectory.

[0057] Taking a three-dimensional horizontal well for rotary steering control as an example, the design target data of the well are: starting point verti...

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Abstract

The invention relates to a borehole track control method and a borehole track control system. The borehole track control system method comprises the following steps: step 1 preparing for guide tool drilling down: namely performing drill tool preparing work according to design of a guide drill tool combination and a drill column structure, measuring into-well drill tools on site, giving numbers to the drill tools and recording the parameters of the drill tools according to into-well sequence; step 2 arranging guide initial work parameters, testing a guide well drilling system to inspect if the system works normally, enabling the drilling tool combination to drill downwards after the guide system is tested to be normal; step 3 after the drill tools drill down to the bottom of a well, performing rotation guide well drilling work according to the initial work parameters set in the step 2, and monitoring a borehole track while performing the work, and adjusting track design in real time according to monitored data; and step 4 finishing guide well drilling operation and tripping out a guide tool. The borehole track control method and the borehole track control system have the advantages of reducing downward transmitting information amount, improving system reliability, well meeting the requirements for underground intelligent guide control and improving work efficiency of a rotation guide well drilling system.

Description

technical field [0001] The invention relates to a trajectory control method and system thereof, in particular to a wellbore trajectory control method and system thereof. Background technique [0002] Rotary steerable drilling technology is the development trend of drilling technology and represents the advanced level of today's directional drilling technology. Rotary steerable drilling controls the wellbore trajectory while the drill string is continuously rotating, and has the following technical advantages: the borehole is smooth, the friction of the drill string is small, which can improve the quality of the wellbore and increase the displacement extension capability; the wellbore is clean, reducing Complicated situations in small wells; a set of drilling tools can realize multiple well trajectory control functions and improve the efficiency of drilling operations. Therefore, rotary steerable drilling technology is widely used in extended reach wells, complex horizontal ...

Claims

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Application Information

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IPC IPC(8): E21B7/08E21B47/022E21B47/12
Inventor 唐雪平苏义脑盛利民窦修荣邓乐王家进王鹏艾维平高文凯
Owner BC P INC CHINA NAT PETROLEUM CORP
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