The structure of the hydraulic slit testing process string for oil and gas well exploration wells

A technology for hydraulic slitting and process pipe string, applied in wellbore/well components, production fluids, earth-moving drilling, etc., can solve the problems of pollution, insufficient depth of perforation technology, perforation compaction zone, etc., to increase seepage flow The area, the effect of increasing production is good, and the effect of easy operation

Active Publication Date: 2019-06-04
BEIJING HUAHUI GEOXPLORA TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the above problems, the present invention provides a method that solves the problems of insufficient perforation depth, perforation compaction zone and pollution, and increases the seepage area at the same time; compared with hydraulic fracturing, its construction is simple, The structure of the hydraulic slit testing process string for oil and gas well exploration wells with low cost, easy control of the generated fractures, and obvious effect of increasing production and injection

Method used

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  • The structure of the hydraulic slit testing process string for oil and gas well exploration wells
  • The structure of the hydraulic slit testing process string for oil and gas well exploration wells

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Embodiment Construction

[0012] Such as figure 1 As shown, the present invention provides a structure of oil and gas well exploratory well hydraulic slotting test process string, including oil pipe 4, power component 8, cutter and ball seat nozzle 11, pump seat 12, positioning nipple 5, packer 6 with centralizer7.

[0013] Wherein, the power unit 8 , the cutter and the ball seat nozzle 11 are sequentially assembled on the bottom end surface of the oil pipe 4 .

[0014] The pump base 12, the positioning nipple 5, the packer 6 and the centralizer 7 are sleeved on the outer wall of the tubing 4 in sequence from top to bottom.

[0015] The power part 8 is a telescopic assembly that can drive the cutter and the ball seat nozzle 11 to move up and down in the vertical direction, and its telescopic distance is 20cm. The cutter and the ball seat nozzle can be driven downward by 20cm from the reset position through the telescopic assembly.

[0016] Wherein, the telescopic assembly can adopt a hydraulic teles...

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Abstract

The invention provides an oil and gas well test pit water power kerf test process tubular column structure. The structure comprises an oil tube (4), the lower portion of the oil tube (4) is successively docked with a power part (8), one or more cutters and ball heads (11), the outer wall of the oil tube (4) is successively provided with, from top to bottom, a pump seat (12), a positioning short section (5), a packer (6) and a centralizer (7). Compared with the conventional perforating technique, the oil and gas well test pit water power kerf test process tubular column structure solves the problem of insufficient depth of the perforating technique, perforating compacted belt and pollution, and simultaneously increases seepage area; compared with hydraulic fracturing, the construction is simple, the cost is low, the produced cracks are easy to control, and the effect of production increase and injection increase is obvious.

Description

technical field [0001] The invention relates to a pipe string, in particular to a structure of a hydraulic slit testing process pipe string for oil and gas well exploration wells. Background technique [0002] In the process of oil and natural gas exploration and development, the completion methods mainly include casing or liner perforation completion, slotted liner completion, open hole completion, open hole or casing gravel packing completion, etc. Among them, casing perforation completion is the most widely used completion method at home and abroad. The basic principle is that after a well is drilled and cemented, the perforator is used to penetrate the casing and cement sheath of the oil layer and penetrate to a certain depth in the oil layer, thereby establishing an oil and gas flow channel between the wellbore and the formation. [0003] Since perforation has been applied to oil and gas wells, from bullet perforation to energy-concentrated perforation, from simple wir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/26E21B43/114
CPCE21B43/114E21B43/26
Inventor 魏建会
Owner BEIJING HUAHUI GEOXPLORA TECH CO LTD
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