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Shallow super heavy oil sagd high temperature sealed gathering and transportation device and its method

A super-heavy oil, gathering and transportation technology, applied in earth-moving drilling, wellbore/well components, and production fluids, etc., can solve problems such as the inability to meet SAGD development requirements, pipeline abrasion, and production fluid separation and treatment.

Active Publication Date: 2018-12-18
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention provides a shallow super heavy oil SAGD high-temperature sealed gathering and transportation device and its method, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the traditional Advanced heavy oil gathering and transportation equipment and technology cannot solve the problems of meeting the requirements of SAGD development, pipeline abrasion and different stages of production fluid separation and transportation

Method used

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  • Shallow super heavy oil sagd high temperature sealed gathering and transportation device and its method
  • Shallow super heavy oil sagd high temperature sealed gathering and transportation device and its method
  • Shallow super heavy oil sagd high temperature sealed gathering and transportation device and its method

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Embodiment 1

[0041] Embodiment 1, as attached figure 1 As shown, the high-temperature airtight gathering and transportation device developed by the small-radius shallow ultra-heavy oil SAGD includes a multi-way valve 1, a single well metering device 2, a first-line gathering pipeline and a second-line gathering pipeline; the first-line gathering pipeline includes a first-line super heavy oil The steam processor 3, the first-line ultra-heavy oil steam processor feed pipe 4 and the first-line oil outlet pipeline 6, the second-line gathering pipeline includes the second-line ultra-heavy oil steam processor 8, the second-line super heavy oil steam processor feed pipe 9 and the second-line Oil outlet pipeline 11; single well metering pipeline 13, multiway valve oil outlet pipe 14, single well oil collection pipeline 15, first-line super heavy oil steam processor 3 and second-line super heavy oil steam processor 8 are fixedly installed on multi-way valve 1 The corresponding first-line ultra-heav...

Embodiment 2

[0042] Embodiment 2, as the optimization of embodiment 1, as attached figure 2 As shown, a first-line lift pump 22 is fixedly installed on the first-line oil outlet pipeline 6 , and a second-line lift pump 23 is fixedly installed on the second-line oil outlet pipeline 11 . This embodiment is mainly used to carry out the SAGD high-temperature sealed gathering and transportation method for shallow super heavy oil under normal working conditions.

Embodiment 3

[0043] Embodiment 3, as the optimization of embodiment 2, as attached image 3 As shown, a first-line heat exchanger 24, a first-line buffer tank 26, and a first-line condensate lift pump 26 are fixedly installed on the first-line steam outlet line 18, and a second-line heat exchanger 27 and a second-line steam outlet line 19 are fixedly installed in sequence. Buffer tank 28 and second-line condensate lift pump 29. The adoption of this embodiment mainly focuses on the SAGD high-temperature sealed gathering and transportation method for super heavy oil in shallow layers in blocks with nearby cold sources that can perform heat exchange.

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Abstract

The invention relates to the technical field of gathering and transportation of SAGD (steam assisted gravity drainage) producing liquids, in particular to an SAGD high-temperature closed gathering and transportation device for shallow super heavy oil and method adopting the SAGD high-temperature closed gathering and transportation device. The SAGD high-temperature closed gathering and transportation device comprises a multi-way valve, a single well metering device, a first-line gathering and transportation pipeline and a second-line gathering and transportation pipeline. The device and the method have the advantages that the problem of large differences between physical properties of the producing liquids in different SAGD development stages is solved, the utilization rate of a gathering and transportation pipe network is increased, and comprehensive utilization of heat energy is facilitated; meanwhile, lifting energy of an oil production pump in a downhole is used sufficiently, intermediate transfer links are reduced as many as possible, the closeness rate of the system reaches 100%, the gathering and transportation pipe network adopts double-line design, so that the flexibility of the pipe network is improved remarkably, mixed transportation and respective transportation processes are matched flexibly, the pipe network is simplified, the utilization rate of the pipe network is increased, the problems of severe abrasion at the late stage of a process and proneness to slug flow are solved, and the requirements for gathering and transportation and separate processing of the producing liquids in different SAGD development stages can be met.

Description

technical field [0001] The invention relates to the technical field of SAGD production fluid gathering and transportation, and relates to a shallow super-heavy oil SAGD high-temperature airtight gathering and transportation device and a method thereof. Background technique [0002] Steam Assisted Gravity Drainage (SAGD) is a cutting-edge technology for developing super heavy oil at home and abroad. SAGD production fluid has the characteristics of high temperature (160°C to 70°C), large steam carrying capacity (5% to 30%), large sand carrying capacity (1% to 5%), and small sand carrying particle size (D 90 ≤10μm) and other characteristics have brought great difficulties to the determination of the gathering and transportation process and the selection of supporting equipment, which are specifically manifested in: [0003] (1) SAGD produces high-temperature steam-carrying liquid, and the gathering and transportation temperature is much higher than the saturated vapor pressure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/24
CPCE21B43/2406
Inventor 蒋旭黄强张瑛刘景宇张侃毅夏新宇戚亚明于海洋王艳香王登胡瑞李倩
Owner BC P INC CHINA NAT PETROLEUM CORP
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