A new multilayer boundary‑detection service has been introduced to resolve the geological uncertainty associated with horizontal wells in Bohai Bay. Geosteering and real time reservoir characterization were used to reduce the uncertainty. Reservoirs consisting of heterogeneous carbonates and shaly sands pose formation evaluation challenges for conventional logging-while-drilling (LWD) measurements. Magnetic resonance techniques hold promise for improving understanding of these reservoirs.
This paper presents an interdisciplinary approach to the description of tectonic dislocations made on the basis of interpretation of seismic data, petrophysical analysis of well-logging data in horizontal wells, and inversion of a multifrequency propagation tool. This work presents a systematic geosteering work flow that automatically integrates a priori information and real-time measurements to update geomodels with uncertainties and uses the latest model predictions in a decision-support system (DSS). The use of intelligent software is on the rise in the industry and it is changing how engineers approach problems. A series of articles explores the potential benefits and limitations of this emerging area of data science. A new multilayer boundary‑detection service has been introduced to resolve the geological uncertainty associated with horizontal wells in Bohai Bay.
Is the Cloud Mature Enough for High-Performance Computing? Data volumes are growing at an exponential rate. How can high-performance computing solutions help operators manage these volumes? This paper describes interpretation results of a 4D seismic-monitoring program in a challenging Middle East carbonate reservoir. This paper discusses a project with the objective of leveraging prestack and poststack seismic data in order to reconstruct 3D images of thin, discontinuous, oil-filled packstone pay facies of the Upper and Lower Wolfcamp formation.
Ghawar vs. Permian Basin: Is There Even a Comparison? While some try to put the two enormous oil producers toe-to-toe, the best thing to do might be to understand why they are different. A challenging problem of automated history-matching work flows is ensuring that, after applying updates to previous models, the resulting history-matched models remain consistent geologically. Production growth in the Permian Basin requires drill rigs running at a high pace. That is challenging companies to push well productivity.
Achieving zero harm has been the talk of the industrial sector to reduce harm to as low as possible. The management of health, safety, security and environment (HSSE) should not be stagnant. It is time to rethink and reassess how the industry can prepare, mitigate and respond to stay ahead of emerging technical, regulatory and societal challenges. This session will engage leaders to discuss opportunities and challenges, share experiences and lessons learnt, and on how technology and digitalisation may affect the quality and productivity of the work sites - all of which are critical in shaping the future of HSSE in the region. The current presentation date and time shown is a TENTATIVE schedule.
Houston-based Surge Energy drilled the Medusa Unit C 28-09 3AH well in the Midland Basin to a TMD of 24,592 ft, with a total horizontal displacement of 17,935 ft, or 3.4 miles. Oil companies generate an enormous amount of data but are reluctant to share it. But more sharing of information may be required in the future to keep up with a rapidly changing energy landscape. The discovery is world’s third-largest natural gas discovery in the past 2 years. A drilling team has focused on increasing lateral lengths in the Marcellus Shale.
Africa (Sub-Sahara) San Leon Energy reported encouraging performance from its OML 18 field in Nigeria. Reperforation of an oil well increased gross field production to approximately 61,000 B/D before output was temporarily scaled back to 53,000 B/D for a shut-in, upgrade, and workover of the well. A number of other field wells will be reperforated in coming months, the company said. San Leon holds a 9.72% interest in the field, which is operated by Eroton (35%). Nigerian National Petroleum Corp. holds the remaining stake. FAR said that drilling has begun on the SNE-5 appraisal well offshore Senegal. The well and the following SNE-6 well will evaluate the upper SNE reservoir units' connectivity and deliverability by oil flow testing that will include interference tests.
Zhang, Yiming (CNPC Huabei Oilfield Company) | Tian, Jianzhang (CNPC Huabei Oilfield Company) | Yang, Dexiang (CNPC Huabei Oilfield Company) | Chen, Shuguang (CNPC Huabei Oilfield Company) | Liu, Xing (CNPC Huabei Oilfield Company) | Hou, Fengxiang (CNPC Huabei Oilfield Company) | Tian, Ran (CNPC Huabei Oilfield Company) | Zhang, Chuanbao (CNPC Huabei Oilfield Company)
The study area is located in the Langgu sag of Northern Jizhong depression, Bohai Bay Basin, East China. In order to achieve exploration breakthrough in deep buried hill, key engineering technologies are developed and used to accurately demonstrate important target identification by recognizing new hydrocarbon accumulation patterns resulting from the analysis of multi-stage structure-controlled trap mechanism and the detailed study of controlling factors over high-quality Ordovician reservoirs based on new high-accuracy 3D seismic data. This study reveals a new evolution mechanism of buried hill controlled by structural superposition, experiencing "the uplift from thrusting in Indo-Chinese to early Yanshan epoch, uplifted block faulting into horsts in middle Yanshan epoch, horsts tilting into belt in Eocene, and belt reversion into trap", and thus puts forward a new mechanism for reservoir forming controlled by a superposition of "dolomite, karsting, and faulting". Three types of reservoir development are identified, including "regional layered pore, local block micropore-fracture, and fracture hole pore layer-block composite", and an accumulation pattern in deep buried hill is constructed, characterized by "efficient hydrocarbon supply from gas-type source rock, predominant migration through fractured surface-nonconformity surface, and stratum- and mass-controlled accumulation", which has guided the 40 years' exploration of Ordovician Yangshuiwu buried hill zone and made a great breakthroughs. Novel relevant exploration technologies have been developed, involving high-accuracy imaging, high-precision well logging identification of hydrocarbon reservoir, ultra-high temperature deep drilling and completion, ultra-high temperature carbonate reservoir stimulation, etc, which solve a worldwide problem that has restricted the exploration of the ultra-high temperature buried hill for many years. These technologies make possible the highest daily production of over 100 m3 oil and 0.5 million m3 gas respectively and sustain a high and stable production for a long term, which guarantee the clean energy supply for Beijing-Tianjin-Hebei region.
The oil price has fallen off dramatically since 2014 which quenched the oil company's enthusiasm to develop new oil fields, especially those with low quality reservoir. For Bohai oilfield, its work is mainly focused on the mature oilfield development in view of its huge reservoir potential, convenient existing facilities and quick fund turnover period. Bohai oilfield has carried out several projects to keep production steady at 3000×104m3 for eight years. In the paper, several methods including high resolution seismic acquisition, potential sands tracking, improving oil recovery (IOR) by water flooding and nanoparticle profile controlling are presented.
Liu, Yunfeng (China University of Petroleum) | Qiu, Zhengsong (China University of Petroleum) | Zhong, Hanyi (China University of Petroleum) | Meng, Meng (University of Tulsa) | Zhao, Xin (China University of Petroleum) | Nie, Zhen (CNPC Research Institute of Petroleum Exploration and Development) | Huang, Weian (China University of Petroleum)
Lubricants used in the Water based mud (WBM) can solve the high torque and drag problems encountered in extended reach drilling operations. The fast development in the deep & ultra-deep drilling technology puts forward higher requirements for the anti-temperature performance of WBM lubricants which beyond the ability of the commercial lubricants. How to fulfill the gradually restrictive environmental regulations and lower the total cost has already been a tough task for the drilling fluid designers.
In this paper, a novel lubricant SDL-1 as synergistic application of optimized waste by-product vegetable oil MVO-3 and expandable graphite GIC was described. The physicochemical properties of MVO-3 and GIC were analyzed separately. In order to form a stable synergetic system, the type and amounts of the dispersants and emulsifiers were optimized. Then technological development process of lubricant SDL-1 was introduced in details. And comprehensive evaluations of SDL-1 were conducted according to corresponding technical standards and the synergistic mechanism of it was revealed.
Development of the novel lubricant as synergistic application of waste by-product vegetable oil and expandable graphite affords a hopeful solution to solve the high torque and drag problems during drilling process. The substantial reduction in drilling costs with valuable application prospect makes the new developed lubricant more attractive. Furthermore, further benefits could appear in the economic development of relevant industries as the locally waste by-product vegetable oil was used in developing the novel lubricant.