Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Gerald Heisig"'
Publikováno v:
SPE Drilling & Completion. 34:414-425
Summary New insights into torsional bottomhole-assembly (BHA) dynamics have been gained from high–frequency at–bit measurements when drilling with steerable mud motors in horizontal wells. Steerable mud motors are traditionally thought to decoupl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd673a331a181ce0fa77bc73f73745a6
https://doi.org/10.2118/194072-pa
https://doi.org/10.2118/194072-pa
Autor:
J. K. Wilson, Gerald Heisig
Publikováno v:
SPE Drilling & Completion. 30:243-256
SummaryInducing vibrations while drilling is a relatively new concept that shows promise in directional applications. Instigating motion of the drillstring, particularly in the sections lying on the low-side of the wellbore, can lead to substantial i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10de159d378e03f0a94c395e72dae833
https://doi.org/10.2118/173049-pa
https://doi.org/10.2118/173049-pa
Autor:
Gerald Heisig
Publikováno v:
International Journal of Production Economics. 73:59-82
The application of a rolling horizon planning framework in inventory control causes different order release decisions in successive planning cycles. These lead to the so-called planning system nervousness. In this paper for a single-stage inventory s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33b88ccdb2dd5d6aa670d9bdaad7c003
https://doi.org/10.1016/s0925-5273(00)00151-1
https://doi.org/10.1016/s0925-5273(00)00151-1
Autor:
Gerald Heisig, Moritz Fleischmann
Publikováno v:
OR Spektrum. 23:25-50
Recovery of used products is an issue of growing importance due to customer expectations and environmental regulation. As a consequence, companies need to adapt their material management taking into account inbound flows of used products. Correspondi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a30afe7a908fa19ea4ea978621ba2e25
https://doi.org/10.1007/pl00013343
https://doi.org/10.1007/pl00013343
Autor:
Stefan Minner, Gerald Heisig
Publikováno v:
OR Spectrum. 21:419-427
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0772120faeca52725110427fe69a54da
https://doi.org/10.1007/s002910050096
https://doi.org/10.1007/s002910050096
Autor:
Gerald Heisig
In logistics systems, the issue of planning stability has attracted increased attention and interest in recent years. This is mainly due to an increasing integration of planning systems both within and across companies in supply chain management. The
Autor:
Gerald Heisig
Publikováno v:
Operations Research-Spektrum. 20:215-228
The problem of planning instability caused by new and actualized data in material coordination systems with periodic review and replanning activities has been discussed from several viewpoints in literature and it is of great practical importance. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0aff12ab1d7e68147d39439ffe05febd
https://doi.org/10.1007/bf01539739
https://doi.org/10.1007/bf01539739
Autor:
Amin Moustafa, Wilhelm Koroletz, Thomas Bennett Howes, Ahmed Ismail, Mohammed Farouk, Gerald Heisig, Mohamed Darwish
Publikováno v:
All Days.
To address risk and uncertainties in difficult sidetrack operations in the Gulf of Suez in Egypt, a new method was implemented to identify and control the direction of the wellbore during the whipstock exit, and close to the liner, where standard dir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b07ed1396527deb6b5d47d72e8019e9
https://doi.org/10.2118/128526-ms
https://doi.org/10.2118/128526-ms
Publikováno v:
All Days.
This paper introduces bending tool face, a new measurement with applications in directional drilling. The measurement is derived from two perpendicular bending moment sensors in the BHA and identifies the orientation of BHA bending with respect to gr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e6ac50543f4745f1f7a598c0dec2712
https://doi.org/10.2118/128789-ms
https://doi.org/10.2118/128789-ms
Publikováno v:
All Days.
The oil-bearing fractured granite basement reservoirs in Vietnam are developed mostly with 8 ½" directional reservoir sections drilled with conventional steerable motors and insert roller cone bits. Although successful, the high weight on bit (WOB)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::612521e495df2e600de022020f3a2ac8
https://doi.org/10.2118/122690-ms
https://doi.org/10.2118/122690-ms