Testing and Simulating the Effect on Fracturing of Port Parameters of a Cemented Sliding Sleeve

Yang Huanqiang; Wang Ruihe; Zhou Weidong; Li Luopeng; Gui Jie

doi:10.11911/syztjs.201502010

Volume 43 Issue 2

Mar. 2015

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Petroleum Drilling Techniques > 2015 > 43(2): 54-58. > DOI: 10.11911/syztjs.201502010

Yang Huanqiang, Wang Ruihe, Zhou Weidong, Li Luopeng, Gui Jie. Testing and Simulating the Effect on Fracturing of Port Parameters of a Cemented Sliding Sleeve[J]. Petroleum Drilling Techniques, 2015, 43(2): 54-58. DOI: 10.11911/syztjs.201502010

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Testing and Simulating the Effect on Fracturing of Port Parameters of a Cemented Sliding Sleeve

1.
School of Petroleum Engineering, China University of Petroleum(Huadong), Qingdao, Shandong, 266580, China;
2.
Oil and Gas Technology Research Institute, PetroChina Changqing Oilfield Company, Xi’an, Shaanxi, 710021, China

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Received Date: September 04, 2014
Revised Date: February 08, 2015

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Abstract

In order to understand the effect of port parameters on fracture initiation pressure and fracture geometry, a fracturing test with φ168.3 mm cemented sliding sleeve that has different types of ports was conducted by theoretical and experimental studies. A ground test of cemented sliding-sleeve fracturing was carried out by use of full-size hydraulic fracturing simulation system, and the test result has been analyzed by using a finite element numerical simulation (FEM). The results show that fracture initiation pressure difference between slot-type port and wing-type port is smaller. The fracture initiation pressure rises with increase of the port angle. The length and quantity of the ports have a large effect on the fracture initiation pressure and the fracture initiation pressure decreases with increase of the port quantity and tube length. A test sample with a wing-type port and 0° slot-type port can form a single symmetric crack after fracturing, and the test sample of port with an angle can form a more complex one. The research results show that the port angle and tube length follow a quadric function relationship with the fracture initiation pressure, and the port quantity follows a linear relationship with the fracture initiation pressure. The results provide a basis and reference for optimizing the port parameters of φ168.3 mm cemented sliding-sleeve and other sleeves.
- sliding sleeve cementing,
- port parameters,
- fracture initiation pressure,
- fracture geometry,
- fracturing test

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