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

Radial horizontal well drilling device and method

A horizontal well and drilling technology, applied in directional drilling, drilling equipment and methods, drilling equipment, etc., can solve the problems of limited pressure bearing, long coiled tubing length, and high operating costs, and achieve convenient construction applications and reduce construction costs. The effect of limitation and convenient transportation

Active Publication Date: 2019-01-18
CHINA UNIV OF PETROLEUM (BEIJING)
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a radial horizontal well drilling device and its drilling method, which overcomes the problems of high operating cost, large length of coiled tubing and limited pressure of the coiled tubing machine in the prior art. The flat well drilling device and its drilling method adopt the non-continuous tubing drilling operation method to avoid the problems caused by the operation of the coiled tubing machine. The device structure is simple, the cost is low, and the horizontal well construction process can be completed safely and efficiently, which is beneficial to the horizontal well technology. be more widely used

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
  • Radial horizontal well drilling device and method
  • Radial horizontal well drilling device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0068] Taking the sidetracking of an old well with casing as a specific example, after many years of exploitation, the bottom hole pressure of the old well is insufficient, and problems such as overflow and well kick will not occur. After the thickened tubing 41 is run into and fixed in the well, the casing window is first opened, and the screw pump 33, the flexible shaft 34 and the drill bit 35 are connected to the bottom of the power booster part 2 on the ground and the tightness is tested to boost the power booster. Part 2 is sealed and connected to the rubber plug slider 42. The rubber plug slider 42 is hung on the steel wire rope 12. After the connection is completed, it is lowered into the well through the elevator 14. During the lowering process, pay attention to the tension of the steel wire rope 12 and monitor it at any time. The lowering situation of the device, if the lowering encounters resistance, it needs to be lowered again by the lifter 14 lifting device. When ...

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 invention relates to a radial horizontal well drilling device and method. The device comprises a suspension feeding part, a dynamic supercharging part, a continuous drilling part and a sliding sealing part; the suspension feeding part can be movably arranged at a wellhead of a vertical shaft with the top sealed, the top of the dynamic supercharging part can be detachably connected to the suspension feeding part, the bottom of the dynamic supercharging part is communicated with the continuous drilling part with the flexible drilling function, and the dynamic supercharging part can increasethe pressure of fluid entering the continuous drilling part; the continuous drilling part is used for drilling a radial horizontal well, and the sliding sealing part can slidably seal and isolate theupper space of the continuous drilling part. According to the radial horizontal well drilling device and method, a discontinuous oil tube drilling operation mode adopted, the problems caused by operation of the continuous oil tube operation machine are avoided, the device is simple in structure and low in cost, the horizontal well construction process can be safely and efficiently completed, and wider application of the horizontal well technology can be obtained conveniently.

Description

technical field [0001] The invention relates to the technical field of oil and natural gas exploitation, in particular to a radial horizontal well drilling device and a drilling method for discontinuous tubing drilling operations. Background technique [0002] my country is rich in unconventional energy sources (shale gas, coalbed methane, geothermal, etc.), and the accumulation mechanism of unconventional natural gas is different from that of conventional oil and gas, so conventional mining methods are not suitable; the development of geothermal resources is also in continuous research, but like Technical means such as hydraulic fracturing are not very effective, therefore, there is an urgent need for an efficient and economical technical means of mining. [0003] With the continuous development of drilling and completion technology, complex well types based on horizontal wells have been gradually developed, providing a theoretical basis for the exploitation of unconventiona...

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 Applications(China)
IPC IPC(8): E21B7/04E21B7/02E21B7/18E21B19/04E21B17/00E21B17/20E21B33/12
CPCE21B7/02E21B7/046E21B7/18E21B17/00E21B17/20E21B19/04E21B33/1208
Inventor 田守嶒李敬彬陆沛青姜天文黄中伟张广清
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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