Title:
INJECTION-EXTRACTION INTEGRATED SAND-DISCHARGING OIL EXTRACTION METHOD FOR A THERMAL RECOVERY AND DEVICE THEREOF
Document Type and Number:
WIPO Patent Application WO/2015/000447
Kind Code:
A1
Abstract:
Provided are an injection-extraction integrated oil extraction method for a thermal recovery oil well and device thereof. The method comprises: during the process of steam injection, the steam having a high temperature and a high pressure enters the underground power liquid pipe and an underground mixed liquid pipe via a wellhead that has thermal compensation, and then enters a heavy oil layer or a super-heavy oil layer via an operating cylinder of an underground water jet pump in communication with the underground power liquid pipe and the underground mixed liquid pipe, thereby enabling the steam injection operation of the oil well; oil extraction commences after the steam injection; the pump core of the water jet pump is sent by the power liquid to the pump cylinder of the underground water jet pump to enable the water jet pump to operate, and is then continuously raised to the ground level via the ring-shaped space between the underground power liquid pipe and the underground mixed liquid pipe, a sealed part in the water jet pump cylinder using screw thread or metal for sealing. The oil extraction method and device simplify the extraction technique of heavy oil, super heavy oil, and sand discharging oil reserve, thereby reducing the well repair necessary for thermal recovery oil wells due to throughput cycles.
Inventors:
ZHANG SHUHUA (CN)
WANG HONGXING (CN)
HAN KECHU (CN)
WANG HONGRONG (CN)
ZHANG QIANGKUN (CN)
WANG HONGXING (CN)
HAN KECHU (CN)
WANG HONGRONG (CN)
ZHANG QIANGKUN (CN)
Application Number:
PCT/CN2014/082574
Publication Date:
January 08, 2015
Filing Date:
July 21, 2014
Export Citation:
Assignee:
SHENGLI OILFIELD LONGDI PETROLEUM TECHNOLOGY EQUIPMENT CO LTD (CN)
International Classes:
E21B43/24
Foreign References:
| CN103321622A | 2013-09-25 | |||
| CN203412561U | 2014-01-29 | |||
| CN1274797A | 2000-11-29 | |||
| US4008762A | 1977-02-22 | |||
| US20100170453A1 | 2010-07-08 |
Other References:
SHENGLI OIL FIELD LONGDI PETROLEUM TECHNOLOGY (EQUIPMENT) CO., LTD.: "Sand Draining and Oil Extracting Technique in Manner of Concentric Tube Integrated Injection-Production", BAIDU LIBRARY ONLINE DATABASE, 29 October 2012 (2012-10-29), pages 17 - 21
Attorney, Agent or Firm:
SHANDONG JINAN QILU SCIENCE PATENT OFFICE CO., LTD. (CN)
山东济南齐鲁科技专利事务所有限公司 (CN)
山东济南齐鲁科技专利事务所有限公司 (CN)
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