Fracturing construction method applied to oil and gas reservoir development and fracturing sliding sleeve assembly
A technology for fracturing sliding sleeves and construction methods, which is applied in the fields of fluid production, earth-moving drilling, wellbore/well components, etc., to achieve the effect of improving efficiency
Pending Publication Date: 2022-06-07
PETROCHINA CO LTD
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Problems solved by technology
Good wellbore conditions and wellbore trajectory are the prerequisites for cluster perforation operations. On the one hand, due to the limitation of well conditions, on the other hand, it is determined by the nature of the cable itself, so there are many complex situations and problems in actual operations. Technical Difficulties
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[0049] To make the purpose of the present application, the technical solution and advantages more clear, the following embodiments of the present application will be further described in detail in conjunction with the accompanying drawings.
[0050] When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar features. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.
[0051]In the description of the present application, it should be understood that the terms "first", "second", etc. are only for descriptive purposes and cannot be understood to indicate or imply relative importance. Unless otherwise noted, "multiple" means two or more. "and / or", describing t...
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The invention discloses a fracturing construction method applied to oil and gas reservoir development and a fracturing sliding sleeve assembly, and relates to the technical field of oil and gas reservoir development. The method comprises the steps that at least two stages of fracturing sliding sleeves and a casing pipe are put into the well bottom together, and the fracturing sliding sleeves correspond to fracturing sections in position; opening a first-stage fracturing sliding sleeve in the at least two stages of fracturing sliding sleeves, and performing fracturing construction on a first fracturing section corresponding to the first-stage fracturing sliding sleeve; when construction of the nth fracturing section is completed, a trigger is put into the well through a well opening and used for triggering the (n + 1) th stage fracturing sliding sleeve to be opened and generating a ball seat, and n is a positive integer; a plugging ball is put into the well through a well mouth, and the plugging ball is used for plugging the nth fracturing section together with the (n + 1) th stage fracturing sliding sleeve; and fracturing construction is conducted on the (n + 1) th fracturing section corresponding to the (n + 1) th stage fracturing sliding sleeve. According to the scheme, staged fracturing is achieved under the condition that no cable is used, the influence of complex well conditions on construction is reduced, and the fracturing construction efficiency can be improved.
Description
Technical field [0001] The present application relates to the technical field of oil and gas reservoir development, specifically to a fracturing construction method and fracturing slip kit components applied to the development of oil and gas reservoirs. Background [0002] "Volumetric fracturing" is currently the most effective process technology means for the development of unconventional oil and gas reservoirs such as shale gas and tight oil and gas, and it is most common to use optical sleeve fracturing to achieve segmented and clustered transformation. [0003] One of the core technologies for optical sleeve fracturing to achieve segmented clustering is to use the cable pumping bridge plug + perforated pipe string technology to complete the bridge plug and multi-cluster perforation joint work at one time. Good wellbore conditions and borehole trajectory are the prerequisites for clustered perforation operations, on the one hand, due to the limitations of well conditions, on t...
Claims
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IPC IPC(8): E21B43/26E21B34/14E21B47/06
CPCE21B43/26E21B34/14E21B47/06E21B34/066
Inventor 曾波范宇宋毅邓友超周小金
Owner PETROCHINA CO LTD