公开(公告)号：US20230176031A1

公开(公告)日：2023-06-08

申请号：US18060838

申请日：2022-12-01

Applicant: CONOCOPHILLIPS COMPANY

Inventor： JAY LOCKLEAR

IPC: G01N33/28 ,  E21B49/08

CPC classification number: G01N33/287 ,  E21B49/088

Abstract: The disclosure describes a method to indirectly measure the amount of elemental sulfur or amorphous dithiazine in a reservoir sample by converting them to H2S gas. The H2S is captured via caustic cyanide solution and quantified by analytical methods and correspond to the concentration of elemental sulfur or amorphous dithiazine. The method has particular applicability to determine where best to drill and avoid locations of high sulfur.

公开(公告)号：US20230143184A1

公开(公告)日：2023-05-11

申请号：US18150280

申请日：2023-01-05

Applicant: CONOCOPHILLIPS COMPANY

Inventor： JAY LOCKLEAR ,  DAVID P. COPE

IPC: C10G29/28 ,  C11D3/34

CPC classification number: C10G29/28 ,  C11D3/34 ,  C10G2300/207 ,  C10G2300/202 ,  C10G2300/4075

Abstract: Methods for preventing elemental sulfur deposition from a hydrocarbon fluid is disclosed. A mercaptan is added to a hydrocarbon fluid that has elemental sulfur and reacted with the elemental sulfur to produce a disulfide and hydrogen sulfide. Amines and/or surfactants can assist with the process. Secondary reactions between the disulfide and the elemental sulfur result in a polysulfide and a solvated sulfur-disulfide complex. The disulfide, hydrogen sulfide, polysulfide and solvated sulfur-disulfide complex do not deposit, and can optionally be removed.