IMPROVING DRILLING EFFICIENCY THROUGH REAL-TIME DYNAMICS CONTROL

Objetivo

In many cases the economics of drilling suffer from a non-optimized adjustement of drilling parameters. Rate of penetration can not be maximized due to the lack of direct information on the drilling process. Complex well geometries often cause a destruction of the drilling BHA because of severe vibrations and the like. The aim of this project is to introduce an innovative instrument for down-hole real-time measurement of drilling parameters, especially dynamics. Demonstration in drilling operation should prove both the tool's integrity and functionality as well as the economic benefits of the new technology. The new measuring instrumentation shall establish a closed information loop between the down-hole drilling process and the surface drilling supervisor. Since effective drilling parameters will be fully under control, the whole process can be optimized by adjusting the drilling regime as required for highest penetration rate and long-term durability of BHA members. Thereby the drilling costs for the operating company as well as the impact on the environment in terms of time of drilling can be substantially reduced.L%
Considerable enhancements made to the design of the pilot series tool, providing more and more useful measurements. Additionally the process of memory dump was strikingly improved, thereby adding to the user's acceptance of the CoPilot service. Surface system field verification has been completed by means of real well tests with CoPilot prototype tools.
The Drilling Efficiency service will provide real-time display of down-hole drilling characteristics on the rig floor. This will allow the driller to take corrective measures to optimize drilling parameters and to reduce the occurence of undesired drilling phenomena. After the well has been drilled, the customer will be provided with a log plot (and digital record) that can be used both for the post-well analysis of the drilled well, and in the pre-well planning of a future well. The Drilling Efficiency system will also record down-hole drilling forces and motions that improve the understanding of the down-hole drilling environment.
The new service will utilize high frequency data from a variety of down-hole sensors including weight-on-bit, torque and bending moment strain gauges, magnetometers, axial and lateral accelerometers and internal and annular pressure sensors. Algorithms embedded in the down-hole tool will process sensor data, compare the actual outputs to pre-determined benchmark values and communicate any variances as a measure of drilling conditions. The information will be presented in real-time, on the rig floor, to enable the driller to take any corrective action. down-hole data will be combined with data from surface sensors to provide further indications of drilling conditions. In addition to real-time information, the Drilling Efficiency service will provide averaged statistical and severity level memory data. Down-hole software requirements are those inherent to providing Drilling Efficiency service, e.g. statistical processing, flagging of drilling diagnostics (severity levels) and tool diagnostics. Diagnostics are tool status logic and data which, in real-time and in memory, inform the user of tool health. The Drilling Efficiency tool will also have the ability to record sensor measurements at high frequencies for later retrieval and analysis at the surface.

Ámbito científico

Programa(s)

FP4-NNE-THERMIE C - Specific programme for research and technological development, including demonstration in the field of non-nuclear energy, 1994-1998

Tema(s)

1 - OIL AND GAS

Convocatoria de propuestas

Data not available

Régimen de financiación

DEM - Demonstration contracts

Coordinador

BAKER HUGHES INTEQ GMBH

Aportación de la UE

Sin datos

Dirección

CHRISTENSENSTRAßE 1
29221 CELLE
Alemania

Coste total