公开(公告)号：US12173597B2

公开(公告)日：2024-12-24

申请号：US18045994

申请日：2022-10-12

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Lee J. Hall ,  Dragan Stojkovic

IPC: E21B43/267 ,  C09K8/80 ,  E21B43/119

Abstract: Methods for completing hydrocarbon wells using variable rate fracturing are provided herein. One method includes positioning a perforation device within a tubular conduit of a downhole tubular, where the downhole tubular extends within a wellbore, and where the wellbore extends within a subsurface region, as well as perforating the downhole tubular using the perforation device to define perforations within the downhole tubular. The method also includes pumping a slurry including fracturing fluid and a lightweight proppant into the tubular conduit according to a variable pumping rate schedule to fracture zones of the subsurface region that are proximate to the perforations, forming corresponding fractures within the subsurface region. The method further includes flowing the slurry into the fractures, via the perforations, to prop the fractures with the lightweight proppant, where the lightweight proppant includes granules formed from a polyolefin, petroleum coke, and/or a polyaromatic hydrocarbon resin.

公开(公告)号：US11905813B2

公开(公告)日：2024-02-20

申请号：US18055206

申请日：2022-11-14

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Timothy J. Nedwed ,  Dragan Stojkovic ,  Lee J. Hall

IPC: E21B43/267 ,  C09K8/64 ,  C09K8/66 ,  C09K8/80

CPC classification number: E21B43/267 ,  C09K8/64 ,  C09K8/665 ,  C09K8/80

Abstract: A slurry including a density-tunable heavy fracturing fluid and a method for completing a hydrocarbon well using such a slurry are provided herein. The slurry includes a proppant and the density-tunable heavy fracturing fluid, where the density-tunable heavy fracturing fluid includes a pseudo heavy fluid suspension, a concentrated aqueous solution of a soluble heavy compound, and/or a high-density organic solution. The density of the density-tunable heavy fracturing fluid is between 1.25 grams/milliliter (g/ml) and 3.4 g/ml. Moreover, the density of the density-tunable heavy fracturing fluid is selected based on the density of the proppant. According to the method provided herein, the slurry is used to provide for more effective placement of the proppant within the fractures than can be achieved using only a slurry including conventional fracturing fluid and the proppant.

公开(公告)号：US12043797B2

公开(公告)日：2024-07-23

申请号：US18054345

申请日：2022-11-10

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Dragan Stojkovic ,  Abdelhadi Sahnoune ,  Haiqing Peng ,  Lee J. Hall ,  Kendal K. Decker

IPC: C09K8/80 ,  C09K8/68 ,  E21B43/267

CPC classification number: C09K8/805 ,  C09K8/685 ,  E21B43/267

Abstract: Proppant particulates like sand are commonly used in hydraulic fracturing operations to maintain one or more fractures in an opened state following the release of hydraulic pressure. Fracturing fluids and methods of hydraulic fracturing may also use proppant particulates composed of high-flow polyolefin coated mineral particles (referred to as high-flow polyolefin coated mineral proppant particulates). In some instances, the high-flow polyolefin-coated mineral proppant particulates have a particle density of equal to or less than about 1.35 grams per cubic centimeter, and further may be prepared using a one-pot hot melt process.