Improvements In Or Relating To Injection Wells
AssigneeGeomec Engineering Limited
InventorFrederic Joseph Santarelli
Life of this patent
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Abstract
A method for providing a well injection program in which an evaluation of plugging of the sandface over time is included to more accurately determine the water treatment facility specifications and well injection parameters for a produced water re-injection well. An artificial produced water is provided which includes both water wet solids and oil wet solids being representative of the treated produced water to be injected, at solids and oil content concentrations magnitudes of order greater than the treated produced water. This allows filtration testing on small injected volumes suitable for standard laboratory equipment. The areal spurt loss and Carter's Leak-Off coefficient are then determinable for use in evaluating the plugging of the sandface over time.
Claims19
A method for a well injection program, comprising the steps:
- (a) determining characteristics of pre-treated injection fluid;
- (b) estimating characteristics of treated injection fluid;
- (c) using the estimated characteristics to evaluate plugging of the sandface over time;
- and
- (d) specifying fluid treatment facilities for the pre-treated injection fluid to provide the treated injection fluid which, when injected, will account for the plugging of the sandface over time.
Dependencies are inferred from the claim text.