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Multi-phase underground injector

A multi-phase, injector technology, applied in the field of multi-purpose tools, can solve problems such as lost circulation and cementing failure, and achieve the effect of preventing lost circulation accidents, rapid and effective wall cementing, and good results

Inactive Publication Date: 2011-07-13
刘甘露 +6
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, during the cementing process, some well sections cannot bear the liquid column pressure of the cement slurry, and lost circulation will also occur, resulting in cementing failure. In this case, it is necessary to reinforce the well sections with lower pressure

Method used

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  • Multi-phase underground injector
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Examples

Experimental program
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Effect test

Embodiment Construction

[0013] Such as figure 1 , 2 As shown, the left end of the launch tube 1 of the present invention is provided with a female thread 1-1, which is used to connect a drill pipe or another launch tube 5, and the right end of the launch tube 1 is provided with a male thread 1-2, which is used to thread the ellipsoidal seeker 2 or 3rd launch tube.

[0014] An axial through hole 1-3 is set in the center of the launch tube 1, and at least two sets of seat holes are arranged along the length direction of the launch tube 1, and each set of seat holes is provided with at least three radially symmetrical seat holes 1-4, each seat The centers of the inner ends of the holes 1-4 communicate with the axial through holes 1-3 respectively.

[0015] A base 3 is set at the inner end of each seat hole 1-4, and a syringe 4 is arranged at the outer end of the seat hole 1-4. The walls are respectively provided with through holes 4-1, 4-2 communicating with the center of the syringe 4. Ammunition c...

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Abstract

The invention discloses a multi-phase underground injector, which belongs to the technical field of underground tools of petroleum drilling, and is a multipurpose tool capable of blocking underground leakage and strengthening a well wall. An axial through hole is formed in the center of a transmitting tube; one end of the transmitting tube is connected with an ellipsoidal guide head; at least twogroups of seat holes are distributed along the length direction of the transmitting tube; each group of seat holes is provided with at least two axially and symmetrically distributed seat holes; the inner end of each seat hole is communicated with the axial through hole; an injection cylinder is arranged in each seat hole through a base; and an ammunition cavity is formed between the base and theseat hole. The multi-phase underground injector has a simple structure and is convenient to operate, glue solution is injected to block the leakage passage in a stratum, extrusion force and shearing force are applied to rock so as to reduce or eliminate a crack, the wall can be strengthened quickly and effectively, the effect is good, the leakage accident can be effectively prevented, and the underground safety can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of downhole tools for petroleum drilling, and is a multipurpose tool capable of blocking downhole leakage and reinforcing the well wall. Background technique [0002] Lost circulation often occurs during the drilling process. A slight loss will interrupt the drilling work, and a serious loss will delay a lot of production time and consume a lot of manpower and material resources. If lost circulation is not dealt with in time, it will also cause well collapse, blowout and pipe sticking accidents, resulting in the scrapping of some or all well sections. Therefore, it is very important to deal with lost circulation in time and restore normal drilling. In addition, during the cementing process, some well sections cannot bear the liquid column pressure of the cement slurry, and lost circulation will also occur, resulting in cementing failure. In this case, it is necessary to reinforce the well sections with lower...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/10
CPCE21B33/138E21B33/10
Inventor 刘甘露张逸群刘亚陈波柯涛武云龙重成兴
Owner 刘甘露