Atlantic Richfield Company

Xiaowei Weng

Thomas K Perkins

Carl T Montgomery

Kirk M Bartko

Bryant W Hainey

A method for detecting in real time the growth of a hydraulic fracture in an impermeable subterranean zone separating a monitored subterranean zone and an injection subterranean zone, which zones are penetrated by a wellbore, whereby a pressure sensor is positioned in pressure sensing communication with the first subterranean zone, and the pressure sensor is monitored for a pressure increase in the first subterranean zone, the pressure increase being indicative of a hydraulic fracture extension from the second subterranean zone through the impermeable zone to the first subterranean zone.

System and method for detecting upward growth of a hydraulic

Deviated wells, in particular, are hydraulically fractured at reduced rates and with higher viscosity fracturing fluids if the fracture design indicates during an initial test fracture that the instantaneous shut-in pressure, upon cessation of injection, exceeds a predetermined amount indicating high friction pressure losses in the near wellbore region of the fracture. Increasing the fracture fluid viscosity and reducing the fracture fluid rate of injection minimizes the creation of multiple fractures of reduced width in the near wellbore region and the high probability of fracture screenout resulting from the creation of the multiple reduced width fractures.

Hydraulic fracturing from deviated wells

An improved method for stimulating coal degasification wells comprising the injection of a foam into a coal seam which contains natural or induced fractures. Thereafter, high pressure gas is injected into the coal seam and suddenly released to cause disintegration of coal surrounding the borehole.

Growing community of inventors

Plano, TX, United States of America

Xiaowei Weng