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Deflagration fracturing and hydraulic impact fracturing combination pipe column and combination method

A technology of hydraulic shock and fracturing, which is applied in earth-moving drilling, production of fluids, wellbore/well components, etc., can solve the problems of combined application of deflagration fracturing and hydraulic shock fracturing measures, and reduce the amount of gunpowder. , to ensure the safety of the operation and to achieve the effect of the safety of the pipe string

Active Publication Date: 2018-12-18
CHINA NAT OFFSHORE OIL CORP +1
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AI Technical Summary

Problems solved by technology

The above technologies are mainly to realize deflagration fracturing or combined with acidification, and realize hydraulic shock fracturing or combined with acidification and negative pressure unblocking. There is no related application of deflagration fracturing and hydraulic shock fracturing at home and abroad. to report

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  • Deflagration fracturing and hydraulic impact fracturing combination pipe column and combination method

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Embodiment Construction

[0027] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0028] Such as figure 1 As shown, this embodiment discloses a combined deflagration fracturing and hydraulic impact fracturing string, including oil pipes (or drill pipes) and variable buttons for connecting the main body. Two conventional devices, the hydraulic impact fracturing device and the deflagration fracturing device, are respectively connected in series at the bottom, wherein the hydraulic impact fracturing device includes a draft tube 3, an impact plate 4, an impact chamber 5, a plunger seat 6, a tail pipe 7, a receiving The deflagration fracturing device includes components such as a detonator 9, a delay device 10, a fracturing gun 11, and a gun tail 13, wherein the fracturing gun 11 has a built-in gunpowder 12.

[0029] Specifica...

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Abstract

The invention belongs to the technical field of oil and gas field reservoir reconstruction and discloses a deflagration fracturing and hydraulic power impact fracturing combination pipe column and combination method. The combination pipe column is connected in series with a hydraulic power impact fracturing device and a deflagration fracturing device through an oil pipe or a drill pipe and an adapter buckle. A central tube is built in the hydraulic power impact fracturing device and is used for transmitting liquid pressure applied by a ground pump through the combination pipe column so as to perform deflagration fracturing operation; according to the combination method, the combination pipe column is lowered to a predetermined working position, deflagration fracturing operation is first performed, and then the hydraulic power impact fracturing operation is performed; the value of liquid pressure applied in the deflagration fracturing operation needs to be smaller than the value of liquid pressure applied in the hydraulic power impact fracturing operation; after reverse circulation well killing operation, the combination pipe column is taken out. Via the deflagration fracturing andhydraulic impact fracturing combination pipe column and combination method, deflagration fracturing and hydraulic impact fracturing combination of the pipe column can be realized in one trip, work trip frequency can be reduced, crack expansion and extension can be facilitated after the deflagration fracturing operation, and pipe column and work safety can be realized.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field reservoir reconstruction, and in particular relates to a joint operation string and a joint operation method of deflagration fracturing and hydraulic impact fracturing. Background technique [0002] China's offshore low-permeability oilfields have large-scale reservoirs, low production levels, and limited potential tapping techniques. During the 12th Five-Year Plan period, the research and application of deflagration fracturing technology began in the field of offshore oilfields, which solved the problem of increasing production in low-permeability near-water reservoirs, strengthened the ability of conventional acidizing transformation, and passed Lufeng 13-1, Huizhou 26- 1 Field application in low-permeability reservoirs in oilfields, the effect of the measures is obvious. [0003] However, some problems have also been exposed in the process of technology application. For example, defl...

Claims

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Application Information

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IPC IPC(8): E21B43/26E21B43/263
CPCE21B43/26E21B43/263
Inventor 孙林黄波杨万有易飞李旭光熊培祺周际永杨军伟黄利平夏光孟向丽杨淼
Owner CHINA NAT OFFSHORE OIL CORP
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