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Oil exploitation super short radius horizontal drilling completion tool and process thereof

An ultra-short radius, horizontal drilling technology, applied in the field of well completion operations and oil exploration drilling, can solve problems such as inability to screen wells, and achieve the effects of reducing the overall cost of drilling, simple construction technology, and large aperture.

Inactive Publication Date: 2003-12-31
PANJIN WWW DEVING SCI & TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is a new technology designed for the defects of the above-mentioned horizontal drilling technology, and has been developed into a whole set of special tools, so as to achieve single-layer multi-wellbore and multi-layer multi-wellbore, and is suitable for various wellbore conditions and reservoir types. , achieve the ultimate goal of doubling the recovery rate and reducing the comprehensive drilling cost, and solve the problem that the completion of the screen cannot be completed

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  • Oil exploitation super short radius horizontal drilling completion tool and process thereof
  • Oil exploitation super short radius horizontal drilling completion tool and process thereof
  • Oil exploitation super short radius horizontal drilling completion tool and process thereof

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Embodiment Construction

[0045] The special tool proposed by the present invention, as well as the horizontal drilling process operation method and operating mechanism, etc., are further specifically described as follows in conjunction with the accompanying drawings:

[0046] One, assemble the various tools that the present invention proposes:

[0047] First, assemble the directional drill. Assemble the pilot block 5, the shaft 6, the collar 7, the sealing ring 8, the bearings 9 and 13, the outer sleeve 10, the inner sleeve 11, the O-ring 15, the water guide joint 16, the inclined iron 17 and the drill bit 18 into a whole, and the drill bit The jacket 10 should be welded and fixed on the front end of the guide follow-up screen 1;

[0048]Next, assemble the high-strength flexible drill pipe. The flexible drill pipe is composed of displacement rod sphere 21, protective sleeve 22, upper half-cavity sphere 23, sealing rubber ring 24, steel ball 25, lower half-cavity sphere 26 and bearing 27. The spheres...

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Abstract

The present invention relates to well drilling and completing technology and implement, and is one set of horizontal well drilling and completing technique and implement. The implement consists of drift diameter gauge, wrought milling cutter, positioning drilling bit, positioning angle building guide apparatus, drilling rod and other parts; and features the connection of the positioning drilling bit and the flexible drilling rod via toothed claw, flexible rod set inside the guiding and following sieve tube and the positioning angle building guide apparatus set in the front of the flexible rod. After finishing angle building and drilling, the flexible drilling rod is withdrawn to finish the horizontal well drilling and completion. With short well drilling period, low cost and high efficiency, the present invention may be used widely in oil production as well as coal and water supply industry.

Description

technical field [0001] The invention relates to oil drilling and well completion operations, and is a new drilling technology for oil field horizontal drilling and its special matching drilling tools. Background technique [0002] In the current oil exploration industry, the small curvature, large radius, medium radius, and small radius all have disadvantages such as high cost and long cycle; all processes of ultra-short radius radial horizontal water jetting, because they use high-pressure water jet Rock drilling, first, needs to be equipped with more special equipment and tools on the ground, the cost is high, and the output ratio is unbalanced; second, due to the limitation of lithology, well depth and expansion of super large diameter holes, the scope of popularization and application is reduced, and this method There are also defects such as complicated drilling technology, long drilling cycle and short service life of the drilled horizontal wellbore. Contents of the ...

Claims

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Application Information

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IPC IPC(8): E21B7/06E21B7/08E21B17/20E21B43/10
CPCE21B17/20E21B7/061E21B43/10
Inventor 曹溪张朝纯张朝旭
Owner PANJIN WWW DEVING SCI & TECH
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