Patent ID: 6929066

Claim:
A method for fracturing a rock formation next to a well bore using a frac pad fluid and collecting the fluid from the rock formation through the well bore, the well bore vertical, horizontal and any angle between the vertical and horizontal, the method for fracturing used for increasing oil and/or gas production from the rock formation, the steps comprising: creating a well bore sandpacked annulus around a lower portion of a production casing at a bottom of the well bore; creating a first pressure gradient by controlling a fluid flow rate of the frac pad fluid through a portion of a well bore sandpacked annulus located above the top of a hydraulic fracture, the first pressure gradient significantly greater than an average gradient of the rock formation' frac-extension pressure; creating a second pressure gradient created by friction loss of the volume flow rate of the frac pad fluid flowing through combined parallel paths in the sandpacked annulus and the hydraulic fracture, the hydraulic fracture propagating outward and upward in the rock formation; creating a linear sourced, cylindrical, stress field in the rock formation adjacent to a length of the sandpacked annulus by maneuvering an intersection of the first and second pressure gradients of the frac pad fluid to the desired frac-extension pressure; and creating a hydraulic fracture in the cylindrical stress field in the rock formation with a fracture plane encompassing the axis of the linear sourced, cylindrical stress field surrounding the sandpacked annulus.