公开(公告)号：US11131186B1

公开(公告)日：2021-09-28

申请号：US16808833

申请日：2020-03-04

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Karem Al-Garadi ,  Ammar El-Husseiny ,  Mohamed Mahmoud ,  Mahmoud Elsayed

IPC: E21B49/00 ,  E21B49/02 ,  G01V3/14 ,  G01V3/02

Abstract: A method for rapid wettability evaluation during exploratory drilling of a hydrocarbon. The method include pre-saturation of the sample by a brine, measuring the bulk brine's T2 NMR relaxation parameter, expelling the brine by oil in the sample, measuring the oil's bulk and pore T2 NMR relaxation parameter, measuring the brine's non-reducible content and T2 NMR relaxation parameter of water in the presence of dominant oil content, expelling the oil by the brine and measuring the T2 NMR relaxation parameter of the irreducible oil content in the dominant brine. The measurements are combined in the index: I=[(T2WB−T2WIOIRR)/T2WB]−[(T2OB−T2OIWIRR)/T2OB], where WB is water bulk, OB is oil bulk, WIOIRR—injected pore water at the irreducible oil content, OIWIRR—injected pore oil at the irreducible water content.

公开(公告)号：US20200317981A1

公开(公告)日：2020-10-08

申请号：US16373137

申请日：2019-04-02

Applicant: King Fahd University of Petroleum and Minerals

Inventor： Abdelmjeed Mohamed ,  Salaheldin Elkatatny ,  Mohamed Mahmoud

IPC: C09K8/18 ,  C09K8/16

Abstract: An drilling mud composition is described, which includes an aqueous base fluid, a viscosifier, and a weighting material. The drilling mud composition also includes an anti-sagging agent that comprises a dimethylamino methyl ester, such as methyl 5-(dimethylamino)-2-methyl-5-oxopentanoate. The anti-sagging agent may be used to prevent barite sagging, where barite is used as a weighting material. Small amounts of the anti-sagging agent may be used to maintain a low sag factor while drilling, and without causing unwanted increases in viscosity. The anti-sagging agent is effective for both vertical and inclined wellbores.

公开(公告)号：US10457855B2

公开(公告)日：2019-10-29

申请号：US16221040

申请日：2018-12-14

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Mohamed Mahmoud ,  Salaheldin Elkatatny ,  Abdulwahab Zaki Ali

IPC: E21B43/26 ,  E21B43/267 ,  E21B21/08 ,  C09K8/66 ,  C01F11/46 ,  C09K8/05 ,  C09K8/84

Abstract: A drilling fluid composition that contains micronized barite particles with a particle size in the range of 1 to 5 μm, and also a method of fracturing a subterranean formation using the drilling fluid composition. Various embodiments of the micronized barite particles and the method of making thereof, the drilling fluid composition, and the method of fracturing a subterranean formation are also provided.

公开(公告)号：US10179874B2

公开(公告)日：2019-01-15

申请号：US15397494

申请日：2017-01-03

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Mohamed Mahmoud ,  Salaheldin Elkatatny ,  Abdulwahab Zaki Ali

IPC: E21B43/267 ,  C09K8/66 ,  C01F11/46 ,  C09K8/05 ,  E21B43/26 ,  C09K8/84

Abstract: A drilling fluid composition that contains micronized barite particles with a particle size in the range of 1 to 5 μm, and also a method of fracturing a subterranean formation using the drilling fluid composition. Various embodiments of the micronized barite particles and the method of making thereof, the drilling fluid composition, and the method of fracturing a subterranean formation are also provided.