Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A pipe string and method for finding water plugging by separate production and measurement in casing completion horizontal well

A technology for finding and plugging water in horizontal wells, which is applied in the direction of casing, wellbore/well components, drill pipes, etc. It can solve problems such as poor reliability, inability to work for a long time, and limited battery life of switches, so as to improve reliability, Obvious effects and high test efficiency

Active Publication Date: 2021-11-30
PETROCHINA CO LTD
View PDF18 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After knowing the water content of each layer through ground sampling and testing, the ground is injected with "pressure-release-pressure" method to send pressure wave commands to the downhole intelligent switch to control its switch. However, this pressure control method is easily affected by various underground systems. Layer pressure interference, the pressure signal received by the switch is easily disordered, and the reliability is poor
In addition, if you want to know the temperature and pressure changes of each layer in the downhole, you need to pull out the entire pipe string, and the battery life of the switch is limited, so it cannot work for a long time

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A pipe string and method for finding water plugging by separate production and measurement in casing completion horizontal well
  • A pipe string and method for finding water plugging by separate production and measurement in casing completion horizontal well
  • A pipe string and method for finding water plugging by separate production and measurement in casing completion horizontal well

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] The details of the present invention can be understood more clearly with reference to the accompanying drawings and the description of specific embodiments of the present invention. However, the specific embodiments of the present invention described here are only for the purpose of explaining the present invention, and should not be construed as limiting the present invention in any way. Under the teaching of the present invention, the skilled person can conceive any possible modification based on the present invention, and these should be regarded as belonging to the scope of the present invention.

[0053] Such as figure 1 , figure 2 As shown, the present invention proposes a pipe string 100 for separate production, measurement and plugging of water in horizontal wells with casing completion and horizontal wells. Below the oil well pump 200, the pump down control device 10 includes a spring 11, an elastic sensor 12, a circuit control mechanism 13, a battery 14 and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides a pipe string and method for finding water plugging by separate mining and measurement of casing well completion horizontal wells. In the field of separate mining, separate measurement and detection of water plugging in downhole production wells, the casing completion horizontal well separate mining, separate measurement, and water plugging pipe string includes The pump down control device and multiple isolation units connected in series on the oil pipe, the pump down control device is arranged under the oil well pump, the pump down control device includes a spring, an elastic sensor, a circuit control mechanism, a battery and a casing, and multiple isolation units The units are connected in series under the control device under the pump through oil pipes. Each isolation unit includes a packer and a corresponding switch arranged under the packer. Multiple switches are connected in series with the circuit control mechanism through cables; the circuit control The mechanism receives the signal of the elastic sensor and controls the switching of the plurality of switches. The invention provides a pipe string and method for separate mining, separate measurement, water shutoff detection and water shutoff detection of casing completion horizontal wells, which can stably and timely obtain temperature and pressure data of each oil layer of the horizontal well, and realize separate production separate measurement, water shutoff integrated process.

Description

technical field [0001] The invention relates to the field of water plugging through separate mining and measurement in downhole production wells, and in particular to a pipe string and method for casing completion horizontal wells with separate mining, separate measurement, and water plugging for horizontal wells with casing completion and high water content. Background technique [0002] Since the horizontal section of the horizontal well goes deep into the oil layer more, its production is equivalent to 2 to 3 times the production of the vertical well, so the number of horizontal wells in the oil field is also increasing year by year. However, as the oilfield development enters the mid-to-late production stage, the high water cut and water production of horizontal wells become more and more prominent, seriously affecting the production of oil wells. Therefore, there is an urgent need to understand the water production and temperature and pressure changes of each section of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/10E21B17/00E21B33/122
CPCE21B17/00E21B33/122E21B47/10
Inventor 何寅李树全宋志军张福兴杨显志何金宝汪泓鲍洪涛吴文琳刘祥余训兵李正于帅李树山王亚实隋金栋程云龙王健骁周晓丹
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products