	US 12,116,524 B2
	Date palm residue drilling mud composition
Tawfik Abdo Saleh, Dhahran (SA); Azeem Rana, Dhahran (SA); Mobeen Murtaza, Dhahran (SA); Muhammad Shahzad Kamal, Dhahran (SA); and Mohamed Mahmoud, Dhahran (SA)
Assigned to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed by KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed on Mar. 26, 2024, as Appl. No. 18/616,739.
Application 18/616,739 is a continuation of application No. 18/181,711, filed on Mar. 10, 2023, granted, now 11,981,856.
Prior Publication US 2024/0301271 A1, Sep. 12, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C09K 8/02 (2006.01); C09K 8/20 (2006.01)

CPC C09K 8/206 (2013.01) [C09K 2208/12 (2013.01)]

18 Claims

1. A date palm residue drilling fluid composition, comprising:

an aqueous base fluid;

2 to 5 wt. % of a date palm leaves extract (DPLE);

1 to 10 wt. % of sodium bentonite particles; and

0.01 to 1 wt. % of a base;

each wt. % based on a total weight of the drilling fluid composition;

wherein the DPLE is homogenously disposed on surfaces of the sodium bentonite particles;

wherein the sodium bentonite particles disposed with the DPLE are present in the drilling fluid composition in the form of a composite; and

wherein a pellet made from the sodium bentonite particles treated with the DPLE has a swelling value at least 75% less than a swelling value of the pellet in an aqueous composition that does not contain the DLPE.