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Study on Improving Cementing Quality of Later Development Well in Maturing Field

Author: ZhangChunTao
Tutor: BuYuHuan；LaiJinRong
School: China University of Petroleum
Course: Petroleum and Natural Gas
Keywords: Cementing Late development wells Tube packer Low-density Cementing quality
CLC: TE256
Type: Master's thesis
Year: 2009
Downloads: 155
Quote: 1
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Abstract


The Shengli Oilfield After 40 years of development , facing the grim situation in the advanced stage of exploration and development , old liberated areas in the development process , the part of the oil zone due to the high pressure water injection and large displacement of the long-term , strong pumping , the formation of underground high-voltage layer , the atmospheric layer , low-voltage layer the coexistence of multi- pressure system , high-pressure wells dropout wells , oil sheet exploitation gradually become the focus of the post - mining cementing quality of less than exploration and development requirements of the increasingly serious situation , improve the old oil the late development wells cementing quality , is a major technical problems in the cementing engineering . In this paper, based on the analysis of many factors affect the development wells cementing quality , in the latter part of the characteristics of the development wells and cementing technical difficulties for the old oil fields of Shengli Oilfield , to improve the technology of Shengli Oilfield late development of old oil well cementing quality research grout filling tube outer packer cementing technology , effective packer the different pressures layer , to solve the pressure difference cementing . The research and development of the foam cement slurry system and fly ash micro silicon slurry system . Foam slurry system has a high compressive strength , rheological properties , low permeability, and has good resistance to fluid loss and temperature performance , and low cost ; fly ash micro silicon low density cement slurry system , not only effectively Usually fly ash settling stability of the low - density cement slurry , and having a low fluid loss , high strength , thickening time is easy to tune and other characteristics improved . The grout pipe outer packer cementing technology as well as the application of the slurry system to solve many old oil development wells cementing completions often the cementing problems encountered high pressure gas channeling , low pressure loss stratigraphic and extra-long closure the solid segment cementing and easy on-site construction , improve the oilfield cementing quality and economic benefits , has a very important significance .

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CLC: > Industrial Technology > Oil and gas industry > Drilling engineering > Wash wells, cementing,completion,reservoir damage and prevention > Cementing engineering
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