Mining system for marginal oil field with marine heavy oil and method

A marginal oil field and development system technology, applied in the field of steam preparation technology and injection technology, can solve problems such as uneconomical, heat loss, high cost, etc., and achieve the effect of saving development costs and flexible layout

Inactive Publication Date: 2012-02-01
CHINA FIRST HEAVY IND
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Problems solved by technology

[0008] Using the underwater production system to develop marginal oilfields, if steam is injected into the underwater production system of offshore heavy oil marginal oilfields from the shoreline or central oilfields through long-distance pipelines, it will face a large amount of heat loss. If efficient insulation measures are used The cost is huge and uneconomical

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  • Mining system for marginal oil field with marine heavy oil and method
  • Mining system for marginal oil field with marine heavy oil and method
  • Mining system for marginal oil field with marine heavy oil and method

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings. Such as Figure 1-3 As shown, a development system for offshore heavy oil marginal oil fields includes an oil and gas processing and storage subsystem 1 and an underwater production subsystem 2, and also includes a mobile steam preparation and injection subsystem 3, and the mobile steam preparation and injection subsystem 3 Including a carrying module 31, an oil storage tank 32, a water storage tank 33, a steam preparation module 34 and a steam injection module 35, the carrying module 31 is a self-propelled ship with a main engine or a floating structure without a main engine towing; The oil and gas processing, storage and transportation subsystem 1 is a surface oil and gas processing, storage and transportation center 12 or an underwater oil and gas processing, storage and transportation center 11 .

[0036] The steam injection module 35 of the present invention includ...

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Abstract

The invention discloses a mining system for a marginal oil field with marine heavy oil and a method. The system comprises an oil / gas processing and storage subsystem, an underwater production subsystem and a mobile steam preparation and injection subsystem, wherein the mobile steam preparation and injection subsystem comprises a carrying module, an oil storage tank, a water storage tank, a steam preparation module and a steam injection module, and the carrying module adopts a self-propelled ship with a host or a host-free towed floating structure. The method comprises steam preparation, steam injection, oil / gas production and oil / gas processing and storage and transport. Since the mobile steam preparation and injection subsystem adopts the self-propelled ship or the non-self-propelled marine floating structure, a sufficient deck area is provided to carry the steam preparation module and the steam injection module; and oil and freshwater can be stored in a large compartment, a mobile real-time marine heat source is formed, steam and hot water can be prepared, and the problems of heat losses of the steam or the hot water in transportation can be solved due to the mobility.

Description

technical field [0001] The present invention relates to a development system and method for offshore heavy oil marginal oilfields, involving thermal development technology for heavy oilfields, marginal oilfield development technology, underwater production system technology, ship and floating marine structure design technology, steam preparation technology and injection technology etc. Background technique [0002] my country has offshore heavy oil marginal oilfields with abundant reserves. How to develop such oilfields flexibly, efficiently and economically is a technical difficulty at present. The development problem of offshore heavy oil marginal oil fields can be decomposed into two sub-problems: [0003] 1. Development of offshore heavy oil fields [0004] The methods of mining heavy oil mainly include thermal method and chemical method. The steam huff and puff method is a commonly used thermal method and has been widely used in the production of onshore heavy oil fi...

Claims

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Application Information

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IPC IPC(8): E21B43/24F22B33/18F17D1/06
Inventor 王斌于志浩张继锋程银国商双喜
Owner CHINA FIRST HEAVY IND
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