Invention Grant
- Patent Title: Enhanced filtration control packages, wellbore servicing fluids utilizing the same, and methods of maintaining the structure of a wellbore
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Application No.: US16381783Application Date: 2019-04-11
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Publication No.: US11034875B2Publication Date: 2021-06-15
- Inventor: Abdullah Al-Yami , Vikrant Wagle , Hussain AlBahrani , Ali Safran , Nasser AlHareth
- Applicant: Saudi Arabian Oil Company
- Applicant Address: SA Dhahran
- Assignee: Saudi Arabian Oil Company
- Current Assignee: Saudi Arabian Oil Company
- Current Assignee Address: SA Dhahran
- Agency: Dinsmore & Shohl LLP
- Main IPC: C09K8/74
- IPC: C09K8/74 ; C09K8/24 ; E21B21/00 ; C09K8/22 ; C09K8/467 ; C10M173/00 ; C04B24/02 ; C04B28/02 ; C04B28/04 ; C04B28/08 ; E21B43/25 ; C09K8/03 ; C09K8/20 ; B01F17/00 ; C09K8/40 ; E21B33/14 ; C09K8/035 ; C09K8/08 ; C09K8/42 ; C09K8/48 ; C04B24/08 ; C09K8/487 ; C04B7/52 ; C09K8/46 ; C09K8/04 ; C04B14/06 ; C04B38/02 ; C10M105/18 ; C10M105/62 ; C10M107/34 ; C10M111/04 ; C09K8/32 ; C09K8/36 ; C10M173/02 ; C10N20/02 ; C10N20/04 ; C10N20/00 ; C10N30/06 ; C10N40/22 ; C10N50/00 ; C10N40/00 ; C09K8/514 ; C09K8/28 ; C04B103/40 ; C04B103/46 ; C04B111/00

Abstract:
A wellbore servicing fluid comprises an aqueous base fluid, one or more alkali metal or alkali earth metal salts, at least one visocisifier, and a filtration control package. The filtration control package may comprise a carboxylic acid and an ethoxylated alcohol compound. Alternatively, the filtration control package may comprise a polyethylene glycol. The carboxylic acid may have from 8 to 20 carbon atoms. The ethoxylated alcohol compound may have a general formula R—(OCH2CH2)X—OH, where R is a hydrocarbon having from 10 to 16 atoms and x is an integer from 6 to 9. The ethoxylated alcohol compound may have a hydrophilic-lipophilic balance of from 8.0 to 16.0. The polyethylene glycol may have a mass average molar mass (Mw) of less than or equal to 1500 daltons.
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