APPLICATION OF NUCLEONIC INSTRUMENTS IN SEPARATOR PROFILING: KUITO FPSO CASE STUDY

2006 ◽  
Vol 46 (1) ◽  
pp. 405
Author(s):  
B. Beinart
Keyword(s):  
Deep Water ◽  
Oil And Gas ◽  
Produced Water ◽  
Single Point ◽  
Oil Production ◽  
Fluid Interface ◽  
Start Up ◽  
Fluid Levels ◽  
Separation Problems

The Kuito field lies in the offshore Cabinda Province, Angola. Kuito was Angola’s first deep-water oil and came on stream in December 1999. Kuito oil is produced via an FPSO. Kuito oil ranges 18–22 API. The FPSO has threephase, horizontal, gravity separation vessels that are used to separate oil and gas from unwanted produced water and solids prior to transportation. The production separators were designed with traditional, single point transmitters for measurement of the fluid interface and overall fluid levels. These were capacitance type instruments mounted inside the vessels in stilling wells.Following production start-up, separation problems began to emerge; these were manifested in numerous process upsets and shutdowns. Kuito oil can form emulsions quickly, and calcium naphthenate is produced at higher temperatures. If allowed to cool, it solidifies. The point instrumentation was unable to detect these emulsion and naphthenate layers resulting in the instrumentation becoming fouled and ceasing to function. The separators were operated ‘blind’, using tri-cocks located on the side of the vessel, and as the instrumentation was installed in stilling wells inside the vessel, it was impossible to maintain them without shutting down and depressurising the vessels. This paper describes how nucleonic profiling instruments were retrofitted to the vessels and shows how their operation was able to identify the different layers within the separators. This enabled the time of oil production to be increased and allowed the pro-active use of effect chemicals such as emulsion breakers and defoamers to be applied before the plant became unstable.

Increasing Control and Accuracy in the Separation Process by Density Profiling

2002 ◽  
Vol 35 (6) ◽  
pp. 164-167 ◽  
Author(s):  
Raymond Paul Lees
Keyword(s):  
Oil And Gas ◽  
Produced Water ◽  
Single Point ◽  
Oil Production ◽  
Separation Process ◽  
Point Measurement ◽  
Level Measurement ◽  
Three Phase ◽  
Chemical Usage ◽  
Principal Method

Three-phase, horizontal, gravity separation vessels are the principal method of extracting oil and gas from unwanted produced water and solids prior to transportation. Traditionally, oil production separators have used separate single-point transmitters for interface and bulk level measurement. This paper shows how a profile of the different layers as opposed to single-point measurement can enable oil production and chemical usage to be optimised.

High-resolution seismic processing technique with broadband,wide-azimuth, and high-density seismic data - A case study of thin-sand reservoir in eastern China

2021 ◽  
pp. 1-45
Author(s):  
Qin Su ◽  
Huahui Zeng ◽  
Yancan Tian ◽  
HaiLiang Li ◽  
Lei Lyu ◽  
...  
Keyword(s):  
Seismic Data ◽  
Oil And Gas ◽  
Single Point ◽  
Eastern China ◽  
High Density ◽  
Songliao Basin ◽  
Seismic Processing ◽  
Oil And Gas Exploration ◽  
Sand Body

Seismic processing and interpretation techniques provide important tools for the oil and gas exploration of the Songliao Basin in eastern China, which is dominated by terrestrial facies. In the Songliao Basin, a large number of thin-sand reservoirs are widely distributed, which are the primary targets of potential oil and gas exploration and exploitation. An important job of the exploration in the Songliao Basin is to accurately describe the distribution of these thin-sand belts and the sand-body shapes. However, the thickness of these thin-sand reservoirs are generally below the resolution of the conventional seismic processing. Most of the reservoirs are thin-interbeds of sand and mudstones with strong vertical and lateral variations. This makes it difficult to accurately predict the vertical and horizontal distribution of the thin-sand bodies using the conventional seismic processing and interpretation methods. Additionally, these lithologic traps are difficult to identify due to the complex controlling factor and distribution characteristics, and strong concealment. These challenges motivate us to improve the seismic data quality to help delineate the thin-sand reservoirs. In this paper, we use the broadband, wide-azimuth, and high-density integrated seismic exploration technique to help delineate the thin-reservoirs. We first use field single-point excitation and single-point receiver acquisition to obtain seismic data with wide frequency-bands, wide-azimuth angles, and high folds, which contain rich geological information. Next, we perform the near-surface Q-compensation, viscoelastic prestack time migration, seismic attributes, and seismic waveform indication inversion on the new acquired seismic data. The 3D case study indicates the benefits of improving the imaging of thin-sand body and the accuracy of inversion and reservoir characterization using the method in this paper.

scholarly journals Depositional Environment of Deep-Water Fan Facies: A Case Study of the Middle Miocene Interval at the Kutei and North Makassar Basins

2021 ◽  
Vol 22 (1) ◽  
pp. 45
Author(s):  
Kuntadi Nugrahanto ◽  
Ildrem Syafri ◽  
Budi Muljana
Keyword(s):  
Sea Level ◽  
Deep Water ◽  
Seismic Data ◽  
Depositional Environment ◽  
Middle Miocene ◽  
Oil And Gas ◽  
Seismic Stratigraphy ◽  
Horizontal Length ◽  
Sequence Boundaries

Massive exploration effort in the study area was conducted in 1996-2014 when deep-water drilling campaign found significant oil and gas discoveries but yet to optimally reach the middle Miocene deep-water sandstone reservoirs. Outcrops, well bores and 2D-seismic data had been incorporated in this study. Datum age from several taxon indicators have been utilized to correlate and unify various markers across the study area into four key biostratigraphy markers: M40, M45, M50, and M65. These four markers are at that point tied to the 2D seismic data in the act of the main horizons in conducting the seismic stratigraphy analysis over the study area not reached by wells. Identifying candidate of sub-regional sequence boundaries onshore and offshore that correspond with relative sea-level drops are the main result of this study. These results were integrated to generate the deep-water fan facies of the middle Miocene's gross depositional environment (GDE) maps, which generally show prograding succession easterly in the various shelf-breaks shifting laterally. The angle of slope and the horizontal length of the shelf-to-slope breaks significantly change from the Middle to Late Miocene until Recent time.Keywords: GDE, deep-water fan, Middle Miocene, Kutei, North Makassar.

scholarly journals NANO-SURFACTANT HUFF AND PUFF OPTIMATIZATION IN MARGINAL X FIELD USING COMMERCIAL SIMULATOR

2019 ◽  
Vol 42 (2) ◽  
pp. 51-57
Author(s):  
Ariel Paramastya ◽  
Steven Chandra ◽  
Wijoyo Niti Daton ◽  
Sudjati Rachmat
Keyword(s):  
Interfacial Tension ◽  
Production Rate ◽  
Oil Recovery ◽  
Oil And Gas ◽  
Oil Production ◽  
Full Scale ◽  
Economic Aspect ◽  
Economic Optimization ◽  
Single Well

Economic optimization of an oil and gas project is an obligation that has to be done to increase overall profi t, whether the fi eld is still economically feas ible or the fi eld has surpassed its economic limit. In this case, a marginal fi eld waschosen for the study. In this marginal fi eld EOR methods have been used to boost the production rate. However, a full scale EOR method might not be profi table due to the amount of resources that is required to do it. Alternatively, Huff and Puff method is an EOR technique that is reasonable in the scope of single well. The Huff and Puff method is an EOR method where a single well serves as both a producer and an injector. The technique of Huff and Puff: (1) The well isinjected with designed injection fl uid, (2) the well is shut to let the fl uid to soak in the reservoir for some time, and (3) the well is opened and reservoir fl uids are allowed to be produced. The injection fl uid (in this case, nano surfactant) is hypothesized to reduce interfacial tension between the oil and rock, thus improving the oil recovery. In this study, the application of Huff and Puff method using Nanoparticles (NPs) as the injected fl uid, as a method of improving oil recovery is presented in a case study of a fi eld in South Sumatra. The study resulted that said method yields an optimum Incremental Oil Production (IOP) in which the economic aspect gain more profi t, and therefore it is considered feasible to be applied in the fi eld.

ONE-ATMOSPHERE PRODUCTION SYSTEMS FOR USE IN DEEP WATER

1979 ◽  
Vol 19 (1) ◽  
pp. 178 ◽  
Author(s):  
Paul B. Cochrane
Keyword(s):  
Deep Water ◽  
Oil And Gas ◽  
Service System ◽  
Production Systems ◽  
System Development ◽  
Development Program ◽  
Well Drilling ◽  
Start Up ◽  
Subsea Production System ◽  
The One

The establishment of a joint industry sponsored subsea production system development program in early 1973 has resulted in the development of field-proven systems for the subsea production of oil and gas using the one atmosphere chamber concept.The program was completed in mid 1978 with the development of a deep-water multi-well drilling and producing station for the subsea production of oil and gas. Deep water is used here to refer to 3000 ft (915 m) and beyond. This study has resulted in equipment designs to provide for:A multi-well drilling and producing template to allow drilling and completion of approximately ten wells from a single rig location.Commingling of production from the wells into a common manifold chamber without laying flow lines.Connection of the production, service and electrical lines through a production riser, remotely located from the template wells, to a floating facility.Installation and servicing of subsea equipment using a one-atmosphere service system for deep water.The development of the deepwater system was preceded by the design, installation and operation of shallow-water equivalents.In October 1972, a one-atmosphere wellhead chamber was installed on a subsea well in 37S ft (114 m) of water in the Main Pass 290 field, offshore Louisiana. Subsequently, a one- atmosphere subsea manifold center designed to serve two subsea wells, completed with one-atmosphere wellhead chambers and one platform well, was installed. Since the August 1976 start-up of this subsea manifold center system, more than 300,000 barrels of oil and 680,000 MSCF of gas have been produced.

Subsurface Disposal of Produced Water and Simultaneous Increased Oil Production Achieved within the Same Wellbore Using Inverted ESP - North Kuwait Case Study

2017 ◽  
Author(s):  
Shamseldin Z. Elaila ◽  
Antony Elred ◽  
Nora H. Al Makseed ◽  
Mohammad K. Al-Banai ◽  
Sara N. Al-Mutairi
Keyword(s):  
Produced Water ◽  
Oil Production

Experimental and Numerical Investigation on Planar Motion Responses of a Single Point Moored Shuttle Tanker in Waves

2019 ◽  
Author(s):  
Ning He ◽  
Cheng Zhang ◽  
Zhuang Kang ◽  
Youwei Kang ◽  
Changhong Wang
Keyword(s):  
Model Test ◽  
Deep Water ◽  
Oil And Gas ◽  
Single Point ◽  
Diffraction Theory ◽  
Line Length ◽  
Plane Motion ◽  
Mooring Line ◽  
Motion Responses ◽  
Motion Characteristics

Abstract In order to ensure the safety of the single point moored shuttle tanker in waves, the numerical model of a shuttle tanker moored with a fixed point was established on the basis of radiation / diffraction theory and pressure integral method in this paper, which was further checked by a series of model tests. Then the plane motion characteristics of the tanker like fishtailing oscillation were analyzed by applying the combined approach of numerical simulation and model test. On this basis, the effects of wave and ballast conditions as well as mooring line length and stiffness on the plane motion of the single point moored tanker were investigated by means of model test. Overall, the research can provide a reference for the design and safety assessment of deep-water offloading system, and give the technical support for the engineering development of deep-water oil and gas projects.

Debottlenecking of Oil and Gas Separation Units to Enhance Oil Production Capacity: A Case Study of Kuwait Oil Company

2016 ◽  
Author(s):  
Atulkumar Dabhi ◽  
Mahdi Al-Qazweeni ◽  
Mohammed Al-Otaibi ◽  
Meshari Al-Hasan ◽  
Saleh Al-Jabri
Keyword(s):  
Gas Separation ◽  
Oil And Gas ◽  
Production Capacity ◽  
Oil Production ◽  
Oil Company
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