MONOBORE DRILLING METHODS WITH MANAGED PRESSURE DRILLING

    公开(公告)号:US20240344412A1

    公开(公告)日:2024-10-17

    申请号:US18753570

    申请日:2024-06-25

    申请人: Opla Energy Ltd.

    摘要: A method for drilling a wellbore comprises using drilling mud having a mud weight less than the formation pore pressure while drilling the horizontal section, to release some formation gas to mix with the drilling mud. As the mixture flows up the wellbore annulus, the resulting pressure in the vertical section is within the mud weight window (MWW) of the weak zones, thereby maintaining wellbore stability without the need for intermediate casings. The wellbore is killed by introducing a volume of heavy mud via a circulation sub in the drill string and periodically introducing additional heavy mud to fill the void left behind by the drill string as it is pulled uphole. The ratio of light mud and heavy mud in the killed well is such that the resulting pressure in the vertical section is within the MWW of the weak zones.

    Hydraulic Pressure Testing System, And Method Of Testing Tubular Products

    公开(公告)号:US20240302257A1

    公开(公告)日:2024-09-12

    申请号:US18651578

    申请日:2024-04-30

    IPC分类号: G01N3/12 E21B47/06 G01N3/06

    摘要: A pressure-testing system for a tubular product such as production tubing. The pressure testing system includes a controller; a fluid reservoir containing a test fluid; a pump in fluid communication with the fluid reservoir; a fluid hose having a first end configured to receive the test fluid from the reservoir, and a second end configured to be fluidically connected to a hydrotest tool for the tubular product; and a transducer. The transducer sends signals to the controller indicative of pressure within the fluid hose. The controller is programmed to automatically (i) store a pressure threshold value (T) and (ii) store a pressure test value (PT) such that when pressure in the fluid hose reaches (T) or when pressure in the fluid hose reaches (PT), the controller sends a signal to divert a direction of fluid being pumped so that fluid is no longer pumped into the tubular product.