Invention Grant
US08999898B2 Drilling fluid additive for loss circulation and wellbore strengthening
有权
钻井液添加剂用于损失循环和井筒加固
- Patent Title: Drilling fluid additive for loss circulation and wellbore strengthening
- Patent Title (中): 钻井液添加剂用于损失循环和井筒加固
-
Application No.: US13836636Application Date: 2013-03-15
-
Publication No.: US08999898B2Publication Date: 2015-04-07
- Inventor: Changjun Zhou , David J. Derwin , Frank A. Wawrzos
- Applicant: Superior Graphite Co.
- Applicant Address: US IL Chicago
- Assignee: Superior Graphite Co.
- Current Assignee: Superior Graphite Co.
- Current Assignee Address: US IL Chicago
- Agency: Cook Alex Ltd.
- Main IPC: C09K8/00
- IPC: C09K8/00 ; C09K8/05 ; C09K8/14 ; C09K8/03 ; C09K8/035 ; C09K8/50
Abstract:
A method for controlling the loss of drilling fluid from an oil well borehole into formations penetrated by a drill bit is disclosed by which resilient graphitic carbon particles having a resiliency greater than about 130% rebound after compression to 10,000 psi; a degree of graphitization greater than 85%, as measured by d002 using XRD; an average pore size larger than 0.035 micron; and an aspect ratio smaller than 0.63 are added to the drilling fluid.
Public/Granted literature
- US20140274816A1 DRILLING FLUID ADDITIVE FOR LOSS CIRCULATION AND WELLBORE STRENGTHENING Public/Granted day:2014-09-18
Information query
