07200539 is referenced by 10 patents and cites 9 patents.

A method for predicting the on-set of sand production or critical drawdown pressure (CDP) in high flow rate gas wells. The method describes the perforation and open-hole cavity stability incorporating both rock and fluid mechanics fundamentals. The pore pressure gradient is calculated using the non-Darcy gas flow equation and coupled with the stress-state for a perfectly Mohr-Coulomb material. Sand production is assumed to initiate when the drawdown pressure condition induces tensile stresses across the cavity face. Both spherical and cylindrical models are presented. The spherical model is suitable for cased and perforated applications while the cylindrical model is used for a horizontal open-hole completion.

Title
Method of predicting the on-set of formation solid production in high-rate perforated and open hole gas wells
Application Number
9/790151
Publication Number
7200539 (B2)
Application Date
February 21, 2001
Publication Date
April 3, 2007
Inventor
Ziqiong Zheng
Sugar Land
TX, US
Gangerico G Ramos
Allen
TX, US
See Hong Ong
Sugar Land
TX, US
Agent
Madan Mossman & Sriram P C
Assignee
Baker Hughes Incorporated
TX, US
IPC
E21B 47/00
G01V 1/40
E21B 47/01
G06G 7/48
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