Anti-agglomerants for controlling gas hydrates
US-2015148266-A1 · May 28, 2015 · US
Composition for fracturing and displacement and method for fracturing and displacement of tight oil reservoir
US10119065B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10119065-B2 |
| Application number | US-201715668900-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 4, 2017 |
| Priority date | Feb 21, 2017 |
| Publication date | Nov 6, 2018 |
| Grant date | Nov 6, 2018 |
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Abstract
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The present invention relates to the field of oilfield chemistry, and discloses a composition for fracturing and displacement and a method for fracturing and displacement of a tight oil reservoir. The composition contains a pyrrolic compound represented by formula (1) and a laurate; in the formula (1), M − is halide ion, R 1 is C1-C5 linear or branched alkyl, and R 2 is C15-C20 linear or branched alkyl. The composition for fracturing and displacement provided in the present invention has functions of fracturing, solid carrying, imbibition, drainage and oil displacement, so as to maximize the recovery efficiency of tight oil, and attain economic and social benefits by implementing multiple functions with a single composition, saving resources, and reducing cost.
First claim
Opening claim text (preview).
The invention claimed is: 1. A composition for fracturing and displacement, the composition consisting of an aqueous solution of a pyrrolic compound represented by formula (1) and a laurate; wherein M − is halide ion, R 1 is C1-C3 linear alkyl, and R 2 is C17-C19 linear alkyl; wherein the laurate is selected from sodium laurate, potassium laurate, and combinations thereof, wherein the pyrrolic compound is present in an amount of 0.5 wt % to 10 wt % and the laurate is present in an amount of 0.1 wt % to 2 wt %. 2. The composition according to claim 1 , wherein, M − is bromine ion, R 1 is methyl, and R 2 is octadecyl. 3. The composition according to claim 1 , wherein, a weight ratio of the pyrrolic compound to the laurate contained is 0.5-20:1. 4. The composition according to claim 1 , wherein water used to form the aqueous solution contains Na + , K + , Ca 2+ , Mg 2+ , HCO 3 and Cl − , wherein, the total concentration of K + and Na + is 1,000 mg/L to 100,000 mg/L, and the total concentration of Ca 2+ and Mg 2+ is 10 mg/L to 5,000 mg/L.
Assignees
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Classifications
- C09K8/68Primary
containing organic compounds · CPC title
with substituted hydrocarbon radicals directly attached to the ring nitrogen atom · CPC title
containing organic compounds · CPC title
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- What does patent US10119065B2 cover?
- The present invention relates to the field of oilfield chemistry, and discloses a composition for fracturing and displacement and a method for fracturing and displacement of a tight oil reservoir. The composition contains a pyrrolic compound represented by formula (1) and a laurate; in the formula (1), M − is halide ion, R 1 is C1-C5 linear or branched alkyl, and R 2 is C15-C20 linear or bra…
- Who is the assignee on this patent?
- Univ China Geosciences Beijing, Univ China Petroleum East China, Univ China Petroleum East China
- What technology area does this patent fall under?
- Primary CPC classification C09K8/68. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 06 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).