Fracturing wellhead ball catcher

A technology of fracturing and ball sleeves, which is applied in the direction of wellbore/well components, production fluid, earthwork drilling and production, etc. It can solve the difficulty of drilling and removing fracturing balls, the failure of fracturing balls to return to the ground, the diameter of sliding sleeves, etc. reduce the problem, achieve the effect of reasonable structure, high matching and simple operation

Inactive Publication Date: 2013-10-30
DAGANG OIL FIELD GRP +1
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the ball-throwing sliding sleeve used in the transfer fracturing of the existing oil and gas wells, the fracturing ball remains in the wellbore after being put into production, the inner diameter of the

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  • Fracturing wellhead ball catcher

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Embodiment Construction

[0008] The present invention will be further described below in conjunction with drawings and embodiments. However, those skilled in the art should know that the present invention is not limited to the specific embodiments listed, as long as it conforms to the spirit of the present invention, it should be included in the protection scope of the present invention.

[0009] The fracturing wellhead ball catching device of the present invention includes a main body tee 2, a fracturing tree joint 1, and a discharge pipeline joint 3. The main pipe of the main tee 2 is placed horizontally, and the branch pipe communicates with the main pipe and is located below the main pipe. Usually, the straight pipe is perpendicular to the main pipe. .

[0010] One end of the main pipe of the main body tee 2 is fixedly connected with the fracturing tree joint 1, and the inner hole at one end of the main body tee 2 is installed with the fracturing tree joint 1. There is an inner boss 9 between the ...

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Abstract

The invention relates to a fracturing wellhead ball catcher and solves the defects that after a ball injection sliding sleeve in formation-shift fracturing of an existing oil and gas well is operated for production, a fracturing ball is left in a shaft, the inner bore of the sliding sleeve is smaller, the fracturing ball cannot return to the ground, and drilling off the fracturing ball is very difficult. One end of a main pipe of a main tee is fixedly connected with a fracturing tree connector, and the other end of the main tube is fixedly connected with a relief pipeline connector. The end of a branch pipe of the main tee is fixedly connected with a catching sleeve, and a locking cap is fixedly mounted at the other end of the catching sleeve. A pressure gauge is fixedly mounted on the main pipe of the main tee. An inner hole of one end of the main tee, provided with the fracturing tree connector, is provided with an inner projection, and a ball baffle is mounted between the inner projection and the fracturing tree connector. The ball baffle is provided with an axial guide hole. The fracturing wellhead ball catcher has the advantages that the catcher is reasonable in structure, simple to operate, high in compatibility and friendly to other constructions; the ball baffle is used to cut off the flow, the fracturing ball falls down under the action of self-weight, and accordingly fracturing wellhead ball catching is achieved.

Description

technical field [0001] The invention relates to an oil and gas well fracturing operation device, in particular to a fracturing wellhead ball-catching device for staged fracturing operations. Background technique [0002] With the continuous deepening of oilfield exploration and development and the increasing progress of mining technology, multi-layer, thin interbedded reservoirs and unconventional oil and gas reservoirs have become important blocks for increasing reserves and production, and staged fracturing technology is an important technical guarantee measure be widely used. The most important link in the string structure of the staged fracturing strings developed successively is the sandblasting sliding sleeve, which is usually opened by throwing balls, and the plugging and transfer of the downhole compressed layer can be realized by throwing balls of different diameters. The ball-pitching sleeve uses fracturing balls and ball seats to seal off the upper and lower well...

Claims

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Application Information

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IPC IPC(8): E21B43/26E21B33/03
Inventor 齐月魁董建华刘长军王晓梅李勇李路李风涛李海霞
Owner DAGANG OIL FIELD GRP
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