The technical feasibility of geothermal power production will be demonstrated in the geothermal research wells Groß Schönebeck using a borehole doublet. This task includes safeguarding the thermal fluid cycle and the optimisation of energy conversion technology at the surface. In order to complete the Enhanced Geothermal System, three massive hydraulic stimulations were performed injecting a to...

Deep geothermal energy systems employ electric submersible pumps (ESPs) in order to lift geothermal fluid from the production well to the surface. However, rough downhole conditions and high flow rates impose heavy strain on the components, leading to frequent failures of the pump system. As downhole sensor data is limited and often unrealible, a detailed and dynamical model system will serve a...

A comprehensive set of downhole measurements was collected in the AND-1B drillhole as part of the on-ice scientifi c programme defi ned for the McMurdo Ice Shelf (MIS) Project. Geophysical logs were recorded over two operation phases and consisted of calliper, temperature, fl uid conductivity, induction resistivity, magnetic susceptibility, natural gamma activity, acoustic televiewer, borehole ...

The challenges created by HPHT conditions make drilling and cementing difficult. overwhelming challenge stands for materials used wells operated at higher temperature pressures in the face of producing downhole. There is need better choice cement operations during development production wells. review method adopted this article considering Calcium Oxide which poses as good expander. In paper, a...

We describe a new short cut strategy to image the sediments and salt edge around a salt flank through an overburden salt canopy. We demonstrate its performance and capabilities on a synthetic acoustic seismic data from a Gulf of Mexico (GOM) style model. In this strategy, we first redatum the surface shots from a walk away Vertical Seismic Profile (WVSP) survey to be as if the source and receiv...

Wireless communication has become a preferred direction for the development of layered water injection tools due to its low cost and high reliability. However, wireless system relies on underground battery power supply，and each will consume significant amount energy. In order save energy consumption, adopts intermittent sleep mode, with intervals usually more than one month. During idle time co...

L. SMITH Controlling corrosion in production tubing is essential for maintaining production and for preventing loss of well control. Materials for use downhole have to meet criteria for corrosion resistance and also mechanical requirements. The potential corrosion rate can be estimated and the risks of sulphide stress corrosion cracking assessed on the basis of the anticipated environmental con...

Good flow and pressure control is essential for successful Underbalanced Drilling (UBD) operations. This work evaluates the use of Model Predictive Control (MPC) for integrated control of well conditions and the topside separation system during UBD. The downhole well pressure, separator liquid levels, and the separator pressure are controlled by manipulation of the rig pump, the choke, and the ...