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Measurement while drilling and precise control ultrashort radius horizontal drilling method

A technology of precise control and measurement while drilling, applied in drilling equipment and methods, measurement, drilling equipment, etc., can solve the problems of short drilling distance, inability to monitor wellbore trajectory, and inability to realize measurement while drilling, etc., to improve drilling distance and the effect of the oil layer drilling rate

Active Publication Date: 2020-01-07
大庆辰平钻井技术服务有限公司
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Problems solved by technology

[0007] The invention provides a method for ultra-short-radius horizontal drilling with measurement-while-drilling and precise control, so as to overcome the failure of the ultra-short-radius horizontal drilling method in the prior art to realize measurement-while-drilling and effective control of Unable to monitor eye trajectory and short drilling distance

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  • Measurement while drilling and precise control ultrashort radius horizontal drilling method
  • Measurement while drilling and precise control ultrashort radius horizontal drilling method

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Embodiment Construction

[0021] The present invention will be described in detail below with reference to the drawings and embodiments.

[0022] Such as figure 1 As shown, the embodiment of the present invention provides an ultra-short radius horizontal drilling method for measuring while drilling and performing precise control, including:

[0023] Step S1: Use the workover rig 350 or above and G105 drill pipe to lower the Φ114mm deflector into the design depth of the wellbore.

[0024] In this step, it specifically includes:

[0025] Step S11, depth control;

[0026] The depth control includes: depth reference system; Party A provides the depth reference system as the standard, and provides the blueprint of the original well. Drilling tool management: Effectively manage all drilling tools to ensure accurate drilling tool length and lowering the whipstock to the designed depth. Re-test the original well: Log the cased well, compare the original logging blueprint, and determine the depth position of the reserv...

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Abstract

The invention relates to the field of oil field drilling, in particular to a measurement while drilling and precise control ultrashort radius horizontal drilling method. The method concretely comprises the following steps of Step 1, feeding a phi 114mm wedge deflection tool to the design depth in a shaft by a workover rig with the model being 350 or greater and a G105 drill pipe; Step 2, performing casing window cutting by using a power swivel; Step 3, drilling and forming inclined section well hole through measurement while drilling; and Step 4, performing drilling in a horizontal section. The measurement while drilling and precise control ultrashort radius horizontal drilling method provided by the invention has the advantages that by using the method, the measurement while drilling canbe performed in real time in a drilling process; the drilling well deviation and the position can be regulated according to measuring data; the horizontal section of an oil reservoir is precisely controlled; and the horizontal section drilling distance and the oil reservoir drilling catching rate are greatly improved.

Description

Technical field [0001] The invention relates to the field of oilfield drilling, in particular to an ultra-short-radius horizontal drilling method using measurement while drilling and precise control. Background technique [0002] In the early 1980s, a new type of special drilling method was developed abroad-ultra-short radius horizontal drilling method. The method can revive dead wells, greatly increase oil well output and crude oil recovery efficiency, and can reduce drilling costs. It is an effective means for reforming old wells, tapping the potential of reservoirs, and stabilizing and increasing production. It is especially suitable for the development of heavy oil, tight oil layers, and low permeability reservoirs. This method is one of the current difficult drilling methods. The research and application of ultra-short-radius horizontal drilling technology in my country has a history of more than ten years. However, due to the inability to achieve measurement while drilling...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/04E21B47/022E21B47/12
CPCE21B7/046E21B47/022E21B47/12
Inventor 李富国李禹辰徐显君
Owner 大庆辰平钻井技术服务有限公司
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