Schlumberger Technology Corporation

Roman Vladimirovich Korkin

Artem Valeryevich Kabannik

Lev Zakharov

Xiaowei Weng

Joel Lee Groves

Oleg Zhdaneev

Gilles Roux

Andrey Vladimirovich Fedorov

Vladimir Konstantinovich Khan

Kira Vladimirovna Yudina

Dmitry Viktorovich Badazhkov

Aleksandra Mikhailovna Khudorozhkova

Demid Valeryevich Demidov

Jared Bruns

Vladimir Nikolaevich Ulyanov

Viacheslav Viktorovich Porosev

Alexander Nikolaevich Cheremisin

The position of a droppable object (e.g., a cementing plug or drillpipe dart) in a cased wellbore may be determined in real time during a cementing operation. A pressure data acquisition system is installed at a wellsite and a pressure transducer is installed at the wellhead. As the droppable object travels through casing it encounters regions with a positive or a negative change of inner cross-sectional dimension. The droppable object generates a pressure pulse as it passes through the regions. The pressure pulse and associated reflections are detected by the pressure transducer, and the signals are processed mathematically to determine the current position of the droppable object.

Methods for determining a position of a droppable object in a wellbore

A method is offered to predict and prevent the event of fracture hit (direct fluid communication) between a parent well and a child (active) well. The growth of a child well creates 3D stress field in the vicinity of a parent well. The growth of a child well is simulated using the geomechanic-transport model. A model of interaction between the child well and parent well is provided. The simulations for different job designs create a set of pressure scenario in the parent both for the cases with and without fracture hit (fracture hit catalogue). Comparison (matching) of actual pressure data in the parent and child well with the pre-calculated pressure scenarios indicate the risk of fracture development with a fracture hit, which means a stop in fracturing stimulation.

Method of predicting and preventing an event of fracture hit

Methods and systems of burning a multi-phase hydrocarbon fluid include determining a water content of the multi-phase hydrocarbon fluid, communicating the multiphase hydrocarbon fluid to a fuel port of a burner in a primary fuel flow, initiating a flame at the burner to combust the multi-phase hydrocarbon fluid, communicating an auxiliary fuel source to the burner fuel port in an auxiliary fuel flow, and controlling the primary and auxiliary fuel flows based on the water content of the multi-phase hydrocarbon fluid.

Method and system for effluent combustion

An apparatus for determining fluid phase fraction of a multiphase fluid mixture () comprises: &#x2014;a x-ray generator () arranged to emit a x-ray radiation spectrum comprising a low energy region and a high energy region, the high energy region including a Bremsstrahlung spectrum; &#x2014;a pipe section () through which the multiphase fluid mixture () flows comprising a measurement section (), said measurement section () being coupled to said x-ray generator (); &#x2014;a detector () coupled to said measurement section () and arranged to detect x-ray radiation that has passed through said multiphase fluid mixture (), the detector () being coupled to a multichannel analyzer () producing a measurement output comprising a low energy (LE) and high energy (HE) measurement counts; wherein the measurement output further comprises a low energy (LV) and high energy (HV) control counts, in a low energy and high energy control windows located on an edge of the Bremsstrahlung spectrum, respectively; and wherein the apparatus further comprises an electrical parameter control arrangement () coupled to the x-ray generator () and the detector (), the electrical parameter control arrangement () being arranged to calculate a first ratio of the high energy control count relative to the low energy control count (R=HV/LV) and a second ratio of the high energy measurement count relative to the low energy measurement count (R=HE/LE), and to adjust the electrical operation of the x-ray generator () based on an electrical parameter control function (F(V)) of said ratios that minimize a dependence of the electrical operation of the x-ray generator on the fluid phase fraction of the multiphase fluid mixture () flowing in the measurement section ().

Apparatus and method for fluid phase fraction determination using X-rays

A method, apparatus and computer program product for measuring a composition of a multiphase fluid, including radiating a photon beam through the multiphase fluid and measuring radiation absorption by the multiphase fluid for at least three energy levels to obtain measured radiation absorption data, and providing the measured radiation absorption data to processing unit configured to calculate the composition of the multiphase fluid using the measured radiation absorption data, whereby an effect of an injected fluid on the absorption of the photon beam is taken into account during calculation of the composition of the multiphase fluid.

Method and apparatus for determining volume fractions in a multiphase flow

This invention relates to nondestructive control, more specifically, to the detection of cracks, flaws and other defects in oil and gas wells and cementing quality control.

Well flaw detection system (embodiments)

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Berdsk, Russia

Roman Vladimirovich Korkin