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1.发明申请公开(公告)号：US20190120037A1
公开(公告)日：2019-04-25
申请号：US16226464
申请日：2018-12-19
摘要： This disclosure describes formulations and methods for remediating subterranean-formed metal-polymer complexes in wells in subterranean formations. In one embodiment, the method includes injecting a metal-polymer complex remediation mixture containing a metal complexing agent into a subterranean formation adjacent to a well at a pressure below the fracture pressure of the formation. A sufficient contact time is allowed and then the metal-polymer complex remediation mixture is pumped from the subsurface. This has been shown to remediate polymer-containing, subterranean-formed metal-polymer complexes in shale formations. Without being held to a particular theory it appears that the metal complexing agent is forming metal complexes with the metals in the complexes, and particularly divalent metal ions. This removal of naturally occurring metals may be un-crosslinking and causing the metal-polymer complexes to go into solution, thereby removing the blockages caused by the metal-polymer complexes.
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2.发明授权公开(公告)号：US10202834B2
公开(公告)日：2019-02-12
申请号：US14525038
申请日：2014-10-27
摘要： This disclosure describes formulations and methods for remediating subterranean-formed metal-polymer complexes in wells in subterranean formations. In one embodiment, the method includes injecting a metal-polymer complex remediation mixture containing a metal complexing agent into a subterranean formation adjacent to a well at a pressure below the fracture pressure of the formation. A sufficient contact time is allowed and then the metal-polymer complex remediation mixture is pumped from the subsurface. This has been shown to remediate polymer-containing, subterranean-formed metal-polymer complexes in shale formations. Without being held to a particular theory it appears that the metal complexing agent is forming metal complexes with the metals in the complexes, and particularly divalent metal ions. This removal of naturally occurring metals may be un-crosslinking and causing the metal-polymer complexes to go into solution, thereby removing the blockages caused by the metal-polymer complexes.
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公开(公告)号：US09932516B2
公开(公告)日：2018-04-03
申请号：US14845696
申请日：2015-09-04
发明人： Andrew Bryce Conway
CPC分类号： C09K8/70 , C09K8/805 , C09K8/887 , C09K8/92 , C09K2208/28
摘要： In a slick-water fracturing operation, a composition is used to prevent the interaction between a polymer in a water-based fracturing fluid and naturally-occurring metal ions. The composition includes a metal-complexing agent, such as a chelating agent. The chelating agent can also be biodegradable and is citric acid in embodiments. The metal-complexing agent can be coated with one or two coatings to create a time-released form. The time-released form prevents loss of the agent prior to delivery at the shale.
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公开(公告)号：US20150292308A1
公开(公告)日：2015-10-15
申请号：US14686237
申请日：2015-04-14
发明人： Andrew Bryce Conway
CPC分类号： C09K8/605 , C09K8/528 , C09K8/602 , C09K8/62 , C09K8/72 , C09K2208/32 , E21B43/267
摘要： This disclosure describes formulations and methods for stimulating the production from wells in nano-darcy shale formations. In one embodiment, the method includes injecting a treatment mixture containing a metal complexing agent into a nano-darcy shale formation adjacent to a well at a pressure below the fracture pressure of the formation. A sufficient contact time is allowed and then the treatment mixture is pumped from the subsurface. This has been shown to stimulate well production in shale formations. Without being held to a particular theory it appears that the metal complexing agent is binding with naturally occurring metals in the shale formation, and particularly divalent metal ions, which are then extracted with the spent fluid. This removal of naturally occurring metals may be increasing the permeability of the formation in the contact region adjacent to the well, thereby causing the observed increased production.
摘要翻译： 本公开描述了用于刺激纳米亲水页岩地层中的井的生产的制剂和方法。 在一个实施方案中，该方法包括在低于地层断裂压力的压力下，将含有金属络合剂的处理混合物注入邻近井的纳米碧玺页岩地层。 允许足够的接触时间，然后将处理混合物从地下泵送。 这已被证明可以刺激页岩层的良好生产。 不被认为是特定的理论，似乎金属络合剂与页岩地层中的天然存在的金属结合，特别是二价金属离子，然后用废流体萃取。 天然存在的金属的这种去除可以增加邻近井的接触区域中地层的渗透性，从而导致观察到的增加的生产。
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公开(公告)号：US11473003B2
公开(公告)日：2022-10-18
申请号：US17170290
申请日：2021-02-08
发明人： Andrew Bryce Conway , Scott Bailey
摘要： In a well in a subterranean formation, treatment fluids for time-released iron control are utilized. These treatment fluids contain a time-released form of a complexing agent or reducing agent, wherein the agent forms a soluble product with iron. The time-released form prevents loss of the agent prior to delivery to the desired site and at the desired time(s). Methods for controlling iron in a well in a subterranean formation utilize these treatment fluids containing a time-released form of a complexing agent or reducing agent and these methods create soluble products when the agent interacts with the iron to control the iron from the formation and/or well.
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6.发明授权公开(公告)号：US11299972B2
公开(公告)日：2022-04-12
申请号：US17066993
申请日：2020-10-09
发明人： Andrew Bryce Conway , Scott Bailey
摘要： This disclosure describes methods for remediating subterranean-formed metal-polymer complexes in wells in subterranean formations. In particular, these methods utilize a peracetic acid remediation mixture. The peracetic acid remediation mixture is injected into a subterranean formation adjacent to a well at a pressure below the fracture pressure of the formation. A sufficient contact time is allowed and then the peracetic acid remediation mixture is pumped from the subsurface. This has been shown to degrade, and thus remediate, polymer-containing, subterranean-formed metal-polymer complexes in shale formations.
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公开(公告)号：US20210246358A1
公开(公告)日：2021-08-12
申请号：US17170290
申请日：2021-02-08
发明人： Andrew Bryce Conway , Scott Bailey
摘要： In a well in a subterranean formation, treatment fluids for time-released iron control are utilized. These treatment fluids contain a time-released form of a complexing agent or reducing agent, wherein the agent forms a soluble product with iron. The time-released form prevents loss of the agent prior to delivery to the desired site and at the desired time(s). Methods for controlling iron in a well in a subterranean formation utilize these treatment fluids containing a time-released form of a complexing agent or reducing agent and these methods create soluble products when the agent interacts with the iron to control the iron from the formation and/or well.
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8.发明授权公开(公告)号：US10697282B2
公开(公告)日：2020-06-30
申请号：US16226464
申请日：2018-12-19
摘要： Formulations and methods for remediating subterranean-formed metal-polymer complexes in wells in subterranean formations are described. In one embodiment, the method includes injecting a metal-polymer complex remediation mixture containing a metal complexing agent into a subterranean formation adjacent to a well at a pressure below the fracture pressure of the formation. A sufficient contact time is allowed and then the metal-polymer complex remediation mixture is pumped from the subsurface. This has been shown to remediate polymer-containing, subterranean-formed metal-polymer complexes in shale formations. Without being held to a particular theory, it appears that the metal complexing agent is forming metal complexes with the metals in the complexes, and particularly divalent metal ions. This removal of naturally occurring metals may be un-crosslinking and causing the metal-polymer complexes to go into solution, thereby removing the blockages caused by the metal-polymer complexes.
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公开(公告)号：US20230045825A1
公开(公告)日：2023-02-16
申请号：US17903537
申请日：2022-09-06
发明人： Andrew Bryce Conway , Scott Bailey
摘要： In a well in a subterranean formation, treatment fluids for time-released iron control are utilized. These treatment fluids contain a time-released form of a complexing agent, wherein the complexing agent forms an insoluble complex with iron. The time-released form prevents loss of the agent prior to delivery to the desired site and at the desired time(s). Methods for controlling iron in a well in a subterranean formation utilize these treatment fluids containing a time-released form of a complexing agent and these methods create insoluble complexes of the agent with the iron to control the iron from the formation and/or well.
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公开(公告)号：US20230053058A1
公开(公告)日：2023-02-16
申请号：US17903562
申请日：2022-09-06
发明人： Andrew Bryce Conway , Scott Bailey
摘要： In a well in a subterranean formation, treatment fluids for time-released iron control are utilized. These treatment fluids contain a time-released form of a complexing agent or reducing agent, wherein the agent forms a soluble product with iron. The time-released form prevents loss of the agent prior to delivery to the desired site and at the desired time(s). Methods for controlling iron in a well in a subterranean formation utilize these treatment fluids containing a time-released form of a complexing agent or reducing agent and these methods create soluble products when the agent interacts with the iron to control the iron from the formation and/or well.
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