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Multifunctional pressure test ball seat for well repair

A multi-functional, ball-seat technology, applied in wellbore/well components, wellbore/well valve devices, measurement, etc., can solve problems such as water accumulation on the oil pump string and well site pollution

Pending Publication Date: 2017-05-03
SHAANXI CHUANGYUAN PETROLEUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, it is easy to cause water accumulation in the upper pipe string of the oil well pump, causing well site pollution

Method used

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  • Multifunctional pressure test ball seat for well repair

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Embodiment Construction

[0008] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0009] Such as figure 1 A special multifunctional pressure test ball seat for well workover shown includes a housing 6, a steel ball 2 and a steel ball seat 3 are arranged inside the housing 6, and the steel ball seat 3 and the housing 6 A rubber sleeve sealing ring 4 is installed between them; a pin 5 is installed on the housing 6 , and the other end of the pin 5 is located in the steel ball seat 3 . ; The casing 6 is also provided with a fine-hole screen 1 , and...

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Abstract

The invention relates to the technical field of petroleum well repair engineering and concretely discloses a multifunctional pressure test ball seat for well repair. The multifunctional pressure test ball seat comprises a housing. A steel ball and a steel ball seat are disposed in the housing; a rubber sleeve sealing ring is installed between the steel ball seat and the housing; pins are mounted on the housing; the other ends of the pins are disposed in the steel ball seat; a thin hole sieve tube is further disposed in the housing; and the thin hole sieve tube is arranged over the steel ball. The multifunctional pressure test ball seat for well repair is advantageous in that a sliding sleeve tool and a fixed valve work principle can be well utilized, and the pressure test ball seat can be designed as a dual-sealing combination steel body sealing and a sealing ring sealing, so sealing pressure test for interior of an oil pipe can be achieved; on the other hand, after pressure test is finished via the ball seat, pressure is continuously applied; when the pins are sheared via a ball seat valve core, the valve core slides into the bottom of a tubular column or slides into a sieve tube type cross and cannot block an oil flow channel; and well repair work construction can be facilitated, well field pollution sources can be reduced and work cost can be lowered.

Description

technical field [0001] The invention relates to the technical field of petroleum workover engineering, in particular to a special multifunctional pressure test ball seat for well workover. Background technique [0002] In the oil workover production pressure test process, after the pressure test is completed, it is necessary to put a percussion rod into the pipe string, open the oil drainer, and perform pressure relief. However, for deviated wells, horizontal wells, and heavy oil wells, the pipe string must be Lift a large part (propose the inclined well section, horizontal section), otherwise, the drainer will not open. In this way, it is easy to cause water accumulation in the upper pipe string of the oil well pump, causing well site pollution. Contents of the invention [0003] The purpose of the present invention is to provide a special multifunctional pressure test ball seat for well workover. The pressure test ball seat is designed as a double seal combination of st...

Claims

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Application Information

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IPC IPC(8): E21B34/12E21B47/06E21B33/10
CPCE21B33/10E21B34/12E21B47/06
Inventor 卜涛于法珍房彬李和平贺亚维王富刘明
Owner SHAANXI CHUANGYUAN PETROLEUM TECH