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

Segment transforming process for well-completion acid fracturing of open-hole horizontal well of oil gas well

A segmented reconstruction and horizontal well technology, which is applied in wellbore/well components, production fluid, earthwork drilling and production, etc. It can solve the problems of inability to construct horizontal wells in segmented acid fracturing, non-full diameter with steps, long introduction period, etc. problem, to achieve the effect of high reliability, strong corrosion resistance, and many stages

Inactive Publication Date: 2015-07-08
XINJIANG GANGTUO ENERGY TECH
View PDF5 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is: to provide a staged acid fracturing process to solve the problem that general acid fracturing cannot be applied to horizontal wells in staged acid fracturing and the problem that there are steps inside the non-full diameter; The introduction of foreign tools has the problems of long introduction period and high cost

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
  • Segment transforming process for well-completion acid fracturing of open-hole horizontal well of oil gas well

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1, a kind of segmental transformation process for oil and gas well open-hole horizontal well completion acid fracturing, such as figure 1 As shown, the process consists of the following steps:

[0024] 1. Pipe string design: Run completion tools in the 6-5 / 8 inch horizontal open hole section 6 to divide the reservoir into 6 sections. The completion tools include five 158mm open hole packers 3 and one 142mm Ball-pitching screen 2, five 142mm pressure control screens 4 and one 150mm full bore completion check valve 1;

[0025] 2. Running of the pipe string: pass the open hole section 6 of the horizontal well that needs to be acid fractured through the first, second, and fourth wells, and connect the well to normal, ensuring that the maximum dogleg degree is lower than 6.8 ° / 30m; before the four-support simulated drilling, high-quality mud is placed in the open hole section, and the performance must meet the following indicators: specific gravity not exceeding...

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

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of a capacity increasing revamp technology of an oil gas well, in particular to a segment transforming process for the well-completion acid fracturing of an open-hole horizontal well of an oil gas well. The process comprises the following steps: firstly, tubular column design; secondly, tubular column tripping in; thirdly, delivering and feeding a ball into a seat; fourthly, setting an open hole packer and a suspending packer, and packing a floor stratum and suspending a tool on a designed position; fifthly, releasing grip, and correcting the depth and determining the actual position of a suspended packer (5); sixthly, adjusting the length of the returned tubular column according to a depth correction result and an oil pipe stretching distance in the above steps, and returning the oil pipe and reloading a wellhead; changing a wellhead packer group into an oiling (gas) tree, connecting a ground pipeline and realizing the standard pressure test; seventhly, pressing and cutting a sliding sleeve pin of a delivery sieve tube (2), and extruding the volume of an oil tube to hold clear water; and eighthly, carrying out reservoir reform and fracturing truck construction to finally complete the segment transformation of the acid fracturing. According to the segment transforming process provided by the invention, the problems that a reservoir of the horizontal well is bad in connectivity and low in oil well yield can be solved, and the well yield can be significantly improved by the well completion increase yield.

Description

technical field [0001] The invention belongs to the technical field of oil and gas well stimulation and transformation, and in particular relates to a staged transformation process for completion of acid fracturing in open-hole horizontal wells of oil and gas wells. Background technique [0002] At present, for carbonate reservoirs with poor connectivity of horizontal wells at home and abroad, one or more artificial fractures with a certain length and high conductivity are formed through acidification or acid fracturing to connect more oil and gas seepage channels and Oil storage space to increase oil well productivity. General acid fracturing: This type of technology cannot segment the horizontal section, but can only perform one-time acid fracturing, which is the so-called general acid fracturing. Non-full-bore segmented acid fracturing: This type of technology can segment the horizontal section, but it cannot realize the full-bore diameter of all tools, and most complex ...

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
IPC IPC(8): E21B43/22E21B43/27
CPCE21B43/26E21B43/16
Inventor 叶正权肖志高张延星雷越麻文磊
Owner XINJIANG GANGTUO ENERGY TECH
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com