公开(公告)号：US09447674B2

公开(公告)日：2016-09-20

申请号：US13896242

申请日：2013-05-16

Applicant: Chevron U.S.A. Inc.

Inventor： Sujin Yean ,  Darrell Lynn Gallup ,  Lyman Arnold Young ,  Russell Evan Cooper ,  Matthew Bernard Zielinski ,  Mark Anthony Emanuele ,  Brian Christopher Llewellyn ,  Dennis John O'Rear

IPC: E21B43/26 ,  C09K8/54 ,  E21B43/38 ,  E21B43/16 ,  E21B43/34 ,  E21B43/40 ,  C09K8/52

CPC classification number: E21B43/38 ,  C09K8/52 ,  E21B43/16 ,  E21B43/26 ,  E21B43/34 ,  E21B43/40

Abstract: Methods and systems relate to the in-situ removal of heavy metals such as mercury, arsenic, etc., from produced fluids such as gases and crudes from a subterranean hydrocarbon-bearing formation. A sufficient amount of a fixing agent is injected into formation with a dilution fluid. The fixing agent reacts with the heavy metals forming precipitate, or is extracted heavy metals into the dilution fluid as soluble complexes. In one embodiment, the heavy metal precipitates remain in the formation. After the recovery of the produced fluid, the dilution fluid containing the heavy metal complexes is separated from the produced fluid, generating a treated produced fluid having a reduced concentration of heavy metals. In one embodiment, the dilution fluid is water, and the wastewater containing the heavy metal complexes after recovery can be recycled by injection into a reservoir.

公开(公告)号：US20160003023A1

公开(公告)日：2016-01-07

申请号：US14789647

申请日：2015-07-01

Applicant: Chevron U.S.A. Inc.

Inventor： Dennis John O'Rear ,  Russell Evan Cooper ,  Wei Wang ,  Sujin Yean

IPC: E21B43/34 ,  G06N5/04 ,  C10G21/00 ,  C10G31/09 ,  E21B41/00 ,  C10G32/02 ,  C10G31/06 ,  C10L3/10 ,  E21B49/00 ,  G05B15/02 ,  C10G31/10

CPC classification number: E21B43/34 ,  C10L3/101 ,  C10L2290/544 ,  C10L2290/547 ,  C10L2290/58 ,  C10L2290/60 ,  E21B41/0092 ,  E21B43/00 ,  E21B47/10 ,  E21B49/00 ,  E21B2049/085

Abstract: A predictive tool is provided for estimating the mercury content of hydrocarbons to be produced from a wellbore in a newly investigated subterranean hydrocarbon producing formation based on the mercury content of an inorganic sample recovered from the wellbore. The mercaptans content of liquid hydrocarbons and/or the hydrogen sulfide content of natural gas produced from the formation may also be used to enhance the prediction. Based on the predicted value, a mercury mitigation treatment may be provided to mitigate the mercury content of hydrocarbons produced from the formation.

Abstract translation: 提供了一种预测工具，用于基于从井筒回收的无机样品的汞含量来估计新近研究的地下烃生产地层中的井眼产生的烃的汞含量。 液体烃的硫醇含量和/或从地层产生的天然气的硫化氢含量也可用于增强预测。 基于预测值，可以提供汞减缓处理以减轻从地层产生的碳氢化合物的汞含量。

公开(公告)号：US20150322764A1

公开(公告)日：2015-11-12

申请号：US14806062

申请日：2015-07-22

Applicant: Chevron U.S.A. Inc.

Inventor： Dennis John O'Rear ,  Clyde Dean Wehunt ,  Gregory A. Winslow

IPC: E21B43/38 ,  E21B43/00 ,  C09K8/58 ,  E21B49/00

CPC classification number: E21B43/38 ,  C09K8/52 ,  C09K8/528 ,  E21B43/34

Abstract: The simultaneous control of the two forms of mercury in petroleum reservoirs (elemental and particulate HgS) is accomplished by the use of agents which react with the elemental mercury and bind the particulate HgS to the formation material: a mercury capture agent and a chemical sand control agent. The elemental control agent reacts with and adsorbs the elemental mercury. The chemical sand control agents reduce or eliminate the dislodging of fine particulate mercury from the surface of the formation material. This simultaneous control can be applied for a new well during well completion operations wherein analyses indicate the presence of mercury. This simultaneous control can also be applied to a currently producing well during a work-over when mercury is detected in the gas or crude products.

Abstract translation: 通过使用与元素汞反应并将颗粒HgS与形成材料结合的试剂，即汞捕获剂和化学防砂控制剂，可同时控制石油储层中的两种形式的汞（元素和微粒HgS） 代理商 元素控制剂与元素汞反应并吸附元素汞。 化学防砂剂减少或消除细颗粒汞从地层材料表面的脱落。 这种同步控制可以在完井操作期间应用于新井，其中分析表明汞的存在。 在气体或原油产品中检测到汞时，这种同步控制也可以应用于当前生产的井。