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Method and device for researching steam cavity expansion boundary in SAGD development process

A technology to develop process, steam, applied in the field of SAGD mining

Pending Publication Date: 2021-02-05
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional SAGD experiment is mainly aimed at studying the change of the temperature field and the development of the steam chamber in the case of no interlayer, and there is no research on the development of the temperature field and the expansion limit of the steam chamber when the interlayer exists.

Method used

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  • Method and device for researching steam cavity expansion boundary in SAGD development process
  • Method and device for researching steam cavity expansion boundary in SAGD development process
  • Method and device for researching steam cavity expansion boundary in SAGD development process

Examples

Experimental program
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Embodiment 1

[0035] Such as figure 1 , image 3 As shown, this embodiment provides a device for studying the steam expansion limit in the SAGD development process, including a SAGD three-dimensional experimental simulation system 1, a steam supply unit 2, an oil supply unit 3 and a collection unit 4;

[0036] The SAGD three-dimensional experimental simulation system 1 includes a casing 11, a sandwich forming mold 12, a first oil injection pipe 13, a first oil production pipe 14, a second oil injection pipe 15, a second oil production pipe 16, a steam injection pipe 17 and a production pipe 18; The molding die 12 is detachably arranged in the casing 11, and is used for dismantling after forming an interlayer with a required permeability in the casing 11. The interlayer divides the interior of the casing 11 into an upper crude oil reservoir 111 and a lower crude oil reservoir 112 The first oil injection pipe 13 and the first oil production pipe 14 are arranged in the upper crude oil reservo...

Embodiment 2

[0051] In addition, based on the device for studying the expansion limit of the steam chamber in the SAGD development process in any of the above embodiments, the present invention also provides a method for studying the expansion limit of the steam chamber in the SAGD development process, which includes the following steps:

[0052] 1) Mix quartz sand and epoxy resin glue evenly, then fill them into the interlayer forming mold 12 and solidify, remove the interlayer forming mold 12 after the curing is completed, thereby prepare an interlayer in the housing 11, and evenly coat it on the inner wall of the housing 11 A number of temperature detection devices 6;

[0053] 2) filling the uniformly mixed oil sands into the upper crude oil reservoir 111 and the lower crude oil reservoir 112 in the casing 11;

[0054] 3) Mix clay and water evenly, and then evenly lay on the upper part of the oil sand; completely cover the oil sand without gaps; to ensure the tightness of the shell 11, ...

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Abstract

The invention discloses a method and device for researching a steam expansion boundary in an SAGD development process. The device comprises an SAGD three-dimensional experiment simulation system, a steam supply unit, an oil supply unit and a collection unit. The SAGD three-dimensional experiment simulation system comprises a shell, an interlayer forming mold, a first oil injection pipe, a first oil production pipe, a second oil injection pipe, a second oil production pipe, a steam injection pipe and a production pipe. The interlayer forming mold is detachably arranged in the shell and used forbeing detached after an interlayer with the needed permeability is formed in the shell, and the interior of the shell is divided into an upper crude oil storage layer and a lower crude oil storage layer through the interlayer. The first oil injection pipe and the second oil production pipe are arranged in the upper crude oil storage layer; the second oil injection pipe, the second oil productionpipe, the steam injection pipe and the production pipe are arranged in the lower crude oil storage layer; the steam supply unit is connected with the steam injection pipe; the oil supply unit is connected with the first oil injection pipe and the second oil injection pipe; and the first oil production pipe, the second oil production pipe and the production pipe are connected with the collection unit.

Description

technical field [0001] The invention relates to a device and method for studying the expansion limit of a steam chamber in the SAGD development process, and belongs to the technical field of SAGD mining. Background technique [0002] With the increasing shortage of conventional oil and gas resources in the world, the increasing demand for oil and gas resources, and the declining production of conventional crude oil, the development of heavy oil has gradually attracted attention. As an unconventional oil and gas resource, oil sands will become an important part of future oil and gas resources. The exploitation of heavy oil has very urgent practical significance for alleviating the tension in energy supply and demand. The importance of efficient development of heavy oil reservoirs is self-evident. [0003] During the development of heavy oil reservoirs, many effective oil recovery methods have been produced, including thermal recovery, microbial heavy oil recovery technology, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/24G09B25/02
CPCE21B43/2406G09B25/02
Inventor 郑强田冀李爱芬卢川刘新光甘云雁谢昊君窦康伟王兴龙叶向东
Owner CHINA NAT OFFSHORE OIL CORP
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