Third-section acid pickling integrated well completion pipe string and method

A completion pipe string and pickling technology, which is applied in the direction of earthwork drilling, wellbore/well components, cleaning equipment, etc., can solve the problems of poor pickling effect, high operating cost, and long well-occupancy period, so as to improve efficiency , The effect of simplifying the acid washing completion process

Active Publication Date: 2015-11-11
山东普瑞思德石油技术有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, domestic oil well three-opening pickling and completion technology adopts three-opening pickling and completion string first, and then runs the well cleaning string for pickling, which takes a long time to take up the well, high operating costs, poor pickling effect, and there are stuck pipe strings. risks of

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  • Third-section acid pickling integrated well completion pipe string and method

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with specific examples, but not as a limitation of the present invention. In the following description, different "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

[0022] figure 1 It is a structural schematic diagram of the three-opening acid-washing integrated completion string in the embodiment of the present invention. like figure 1 As shown, the three-opening acid-washing integrated completion string includes the hanging packer 1, the three-opening acid-washing integrated well-staying string 100 and the three-opening acid-washing integrated service string 200, and the hanging packer 1 is For the double-suspension packer, the three-opening acid-washing integrated well-staying string is connected to the outer suspension ...

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Abstract

The invention discloses a third-section acid pickling integrated well completion pipe string and method. The integrated well completion pipe string comprises a suspension packer, a third-section acid pickling integrated left-in-well pipe string and a third-section acid pickling integrated service pipe string. The suspension packer is a double suspension packer, the third-section acid pickling integrated left-in-well pipe string is connected with an outer suspension head of the double suspension packer, and the third-section acid pickling integrated service pipe string is connected with an inner suspension head of the double suspension packer. The third-section acid pickling integrated service pipe string is located inside the third-section acid pickling integrated left-in-well pipe string, and the third-section acid pickling integrated left-in-well pipe string comprises an acid pickling valve and a drilling pipe located on the lower portion of the acid pickling valve. Sliding sealing is achieved between the third-section acid pickling integrated service pipe string and the third-section acid pickling integrated left-in-well pipe string, and the sealing position of the third-section acid pickling integrated left-in-well pipe string and the third-section acid pickling integrated service pipe string is located between the acid pickling valve and the drilling pipe. The acid pickling and well completion steps are simplified, and operation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of oil well pickling and completion, in particular to a three-opening pickling integrated well completion string and a method. Background technique [0002] At present, domestic oil well three-opening pickling and completion technology adopts three-opening pickling and completion string first, and then runs the well cleaning string for pickling, which takes a long time to take up the well, high operating costs, poor pickling effect, and there are stuck pipe strings. risks of. Contents of the invention [0003] In view of this, the embodiment of the present invention provides a three-opening acid washing integrated completion pipe string and method, the main purpose of which is to simplify the acid washing and completion process of oil, gas and water wells and improve efficiency. [0004] In order to achieve the above object, the present invention mainly provides the following technical solutions: [0005...

Claims

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Application Information

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IPC IPC(8): E21B37/06
Inventor 李江涛韩军军许清华薛学朝张帅
Owner 山东普瑞思德石油技术有限公司
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