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System for cyclic injection and production from a well

A fluid injection, wellbore technology, applied in the system field, can solve problems such as low oil volume flow

Inactive Publication Date: 2008-07-30
SHELL INT RES MAATSCHAPPIJ BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A disadvantage of the known system is that the volume flow of oil through the LEP port is low during the production cycle

Method used

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  • System for cyclic injection and production from a well
  • System for cyclic injection and production from a well
  • System for cyclic injection and production from a well

Examples

Experimental program
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Embodiment Construction

[0015] In the drawings, the same reference numerals designate the same components.

[0016] Referring to Figure 1 , a wellbore 1 for producing hydrocarbon oil and gas from a formation 2 is shown. The shaft 1 has a substantially vertically extending upper section 3 and a substantially horizontally extending lower section 4 . A wellhead 5 is provided at the ground 5 a above the wellbore 1 . Lower wellbore section 4 penetrates reservoir 2A of formation 2 . A conventional casing 6 extends from the surface into the vertical wellbore section 3 , while a production liner 8 extends from the lower end of the casing 6 into the horizontal wellbore section 4 . Packer 10 seals the outer surface of liner 8 relative to the inner surface of casing 6 . The liner 8 comprises a plurality of inlet sections in the form of tubular sand screens 12 for reducing the inflow of solid particles and a plurality of tubular bodies 14 . As shown in FIG. 1 , the screens 12 and tubular bodies are arranged ...

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PUM

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Abstract

A system is provided for injecting an injection fluid into an earth formation via a wellbore formed in the earth formation and for producing hydrocarbon fluid from the earth formation via the wellbore. The system comprises an injection conduit extending into the wellbore and being in fluid communication with a plurality of outlet ports for injection fluid, and a production conduit extending into the wellbore and being in fluid communication with at least one inlet section for hydrocarbon fluid. The injection conduit is arranged to prevent fluid communication between the injection conduit and each said inlet section.

Description

technical field [0001] The present invention relates to a system for injecting injection fluid into a formation via a wellbore formed in the formation and for producing hydrocarbon fluids from the formation via the wellbore. The injection fluid may be, for example, steam injected into the formation at high temperature and pressure to reduce the viscosity of heavy oil present in the formation, thereby enhancing the flow of oil through the pores of the formation during the production phase. In this application, steam is injected through one or more injection wells drilled adjacent to a production well, and oil is recovered from the production well. Background technique [0002] Instead of using separate wells for steam injection and oil recovery, a single well can be used for steam injection and oil recovery. In such operations, steam injection and oil recovery are performed in a periodic manner, commonly referred to as the periodic steam injection (CSS) method. In the CSS m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/24E21B43/16E21B37/08
CPCE21B43/162E21B43/24E21B37/08E21B43/16
Inventor F·A·阿斯卡尼奥米兰诺A·M·莫林格E·P·德鲁菲尼亚克
Owner SHELL INT RES MAATSCHAPPIJ BV