Hybrid fracturing treatment with natural gas

    公开(公告)号:US11333012B2

    公开(公告)日:2022-05-17

    申请号:US17252072

    申请日:2018-08-29

    摘要: Methods of fracturing a subterranean formation containing a hydrocarbon include introducing a first fracturing fluid that includes natural gas into the formation at a rate and pressure sufficient to create a complex fracture in the formation; introducing a second fracturing fluid into the formation, wherein the second fracturing fluid comprises water, a gelling agent, a foaming agent, natural gas, and proppant particulates; and allowing the second fracturing fluid to transport a portion of the proppant particulates into the complex fracture.

    Sand consolidation with a curable resin and filtercake removal fluid

    公开(公告)号:US11492531B1

    公开(公告)日:2022-11-08

    申请号:US17450624

    申请日:2021-10-12

    IPC分类号: E21B43/02 C09K8/035

    摘要: Sand consolidation for a subterranean formation can be achieved by adding a curable resin to a drilling fluid. The curable resin can be a furan- or epoxy- or silane-based resin. The drilling fluid can form a filtercake on a wellbore wall. A filtercake-removal fluid can provide a dual function to remove the filtercake and cure the curable resin, which consolidates formation particles. A curing agent can also be included in the filtercake-removal fluid. Sand consolidation can also be achieved by adding the curable resin to the filtercake-removal fluid. The resin can penetrate into the formation as the filtercake is being removed and then cure.

    REMOVING RESIN COATINGS FROM SURFACES
    9.
    发明申请
    REMOVING RESIN COATINGS FROM SURFACES 有权
    从表面去除树脂涂料

    公开(公告)号:US20160244700A1

    公开(公告)日:2016-08-25

    申请号:US15028137

    申请日:2013-11-11

    摘要: Methods and compositions are provided for removing a residue of resin from the surface of equipment. In one embodiment, the methods comprise: providing a cleaning solution comprising a pH-adjusting agent, a chemical solvent, and water, wherein the chemical solvent is selected from the group consisting of β-lactam, γ-lactam, δ-lactam, ε-lactam, 2-pyrrolidone, N-methylpyrrolidone, 1,3-dimethyl-2-imidazolidinone (DMI), caprolactam, cyclohexanone, cyclopentanone, β-butyrolactone, γ-butyrolactone, δ-decalactone, γ-valerolactone, ε-caprolactone, butylene carbonate, propylene carbonate, and ethylene carbonate, any combination thereof, and any derivative thereof; allowing the cleaning solution to contact a surface at least partially coated with a layer of resin; and allowing the cleaning solution to at least partially dissolve the resin.

    摘要翻译: 提供了从设备表面去除树脂残留物的方法和组合物。 在一个实施方案中,所述方法包括:提供包含pH调节剂,化学溶剂和水的清洁溶液,其中所述化学溶剂选自β-内酰胺,γ-内酰胺,δ-内酰胺,ε 内酯,2-吡咯烷酮,N-甲基吡咯烷酮,1,3-二甲基-2-咪唑啉酮(DMI),己内酰胺,环己酮,环戊酮,β-丁内酯,γ-丁内酯,δ-十聚内酯,γ-戊内酯,ε-己内酯, 碳酸亚丁酯,碳酸亚丙酯和碳酸亚乙酯,它们的任何组合及其任何衍生物; 使清洁溶液接触至少部分涂覆有树脂层的表面; 并使清洁溶液至少部分地溶解树脂。