Abstract: A coring tool includes an electronics section that includes a material that is buoyant in a wellbore fluid, a coring section coupled to the electronics section and including a sidewall coring unit operable to penetrate an inner wall of a wellbore and thereby obtain a core sample, and a stabilizer arm assembly operable to laterally extend a stabilizer arm into engagement with the inner wall of the wellbore. A weight section is operatively coupled to the electronics and coring sections and exhibits a weight that overcomes buoyancy forces generated by the buoyant material in the wellbore fluid, and a release mechanism releasably attaches the weight section to the electronics and coring sections. Activating the release mechanism detaches the weight section, and thereby allows the electronics and coring sections to float in the wellbore fluid and ascend the wellbore.

Abstract: A coring tool includes an electronics section that includes a material that is buoyant in a wellbore fluid, a coring section coupled to the electronics section and including a sidewall coring unit operable to penetrate an inner wall of a wellbore and thereby obtain a core sample, and a stabilizer arm assembly operable to laterally extend a stabilizer arm into engagement with the inner wall of the wellbore. A weight section is operatively coupled to the electronics and coring sections and exhibits a weight that overcomes buoyancy forces generated by the buoyant material in the wellbore fluid, and a release mechanism releasably attaches the weight section to the electronics and coring sections. Activating the release mechanism detaches the weight section, and thereby allows the electronics and coring sections to float in the wellbore fluid and ascend the wellbore.

Abstract: A flowmeter includes a fluid collection chamber for receiving a fluid flow, an adjustable collection tube configured to receive a portion of the fluid flow to generate one or more first measured parameters of multiple measured parameters of the fluid flow, a sampling chamber configured to measure samples of the fluid flow to generate one or more second measured parameters of the multiple measured parameters of the fluid flow, and a control module in signal communication with the adjustable collection tube and the sampling chamber and including one or more processors by which the control module automatically performs certain operations. Such operations include determining multiple output parameters of the fluid flow based on the multiple measured parameters and multiple input parameters. Such operations further include controlling a size of the adjustable collection tube based on a property of the fluid flow.

Abstract: Actual distributed temperature sensing (DTS) data and pressure data are received in response to a stimulation treatment applied to a hydrocarbon field. A pre-stimulation model is built that includes reservoir parameters, which generates simulated DTS and pressure data as a function of the reservoir parameters that include a permeability parameter and a skin parameter. In response to determining that a thermal match between the actual DTS and pressure data and the simulated DTS and pressure data is not obtained, the reservoir parameters are updated. In response to determining that the updated reservoir parameters do not match a performed pressure transient analysis (PTA), the reservoir parameters and the pre-stimulation model are updated, and the simulated DTS and pressure data are re-generated based on the updated pre-stimulation model.

Abstract: Actual distributed temperature sensing (DTS) data and pressure data are received in response to a stimulation treatment applied to a hydrocarbon field. A pre-stimulation model is built that includes reservoir parameters, which generates simulated DTS and pressure data as a function of the reservoir parameters that include a permeability parameter and a skin parameter. In response to determining that a thermal match between the actual DTS and pressure data and the simulated DTS and pressure data is not obtained, the reservoir parameters are updated. In response to determining that the updated reservoir parameters do not match a performed pressure transient analysis (PTA), the reservoir parameters and the pre-stimulation model are updated, and the simulated DTS and pressure data are re-generated based on the updated pre-stimulation model.