[12] Patent
[11] Patent No.:GC0009386  
[45] Date of Publishing the Grant of the Patent: 31/Dec /2018                56/2018  
Number of the Decision to Grant the Patent:2018/141773
Date of the Decision to Grant the Patent:17/Dec/2018

[21] Application No.:GC 2014-26623

[22] Filing Date:6/3/2014

[30] Priority:

[33] State [32] Priority date [31] Priority No.
US
8/3/2013
13/790,619

[72] Inventors:1- Mustafa Al Ibrahim،2- Mokhles Mustapha Mezghani،3- Johannes Jacobus Maria Buiting

[73] Owner: SAUDI ARABIAN OIL COMPANY, 1 Eastern Avenue, 31311 , Dhahran , Saudi Arabia

[74] Agent: Suleiman I. Al-Ammar Law Office

  

 

  

[51]IPC:
Int. Cl.: G01V 11/00, 3/32, 3/14 (2006.01)

[56] Cited Documents:

-WO 98/40763 A1 (CONOCO INC [US]) 17 September 1998
-US 2010/313633 A1 (ANAND VIVEK [US] ET AL) 16 December 2010
 
Examiner: Eng. Mohammed A. AlShamrani

[54] DETERMINING CONTINUOUS CAPILLARY PRESSURE CURVES FOR SUBSURFACE EARTH FORMATIONS USING SATURATION AND NMR LOG DATA
[57] Abstract: Continuous capillary pressure (Pc) curves of subsurface rock formations adjacent wells are determined based on translation relaxation time (T2) data from nuclear magnetic resonance (NMR) and from wireline well logs, such as resistivity logs, to obtain water saturation (Sw) of the rock in the formations. The T2 data and the hydrocarbon density, water density, free water level, and paleo-water level of the formation are processed to obtain parameters of Thomeer hyperbolas that closely conform to water saturation values obtained from the other well logs. The Thomeer hyperbolas so determined are converted to capillary pressure curves.
No. of claims: 23     No. of figures: 25


 

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