Integration Success Story in Shilaif Shale Oil from Vertical Pilot to Horizontal

2021 ◽  
Author(s):  
Amena Dhawi Alharthi ◽  
Pierre Van Laer ◽  
Trevor Brooks ◽  
Pierre Olivier Goiran ◽  
Muhammad Zeeshan Baig ◽  
...  

Abstract The development of unconventional target in the Shilaif formation is in line with the Unconventional objective towards adding to ADNOC reserves. For future optimization of development plans, it is of utmost importance to understand and test and therefore prove the productivity of the future Unconventional Horizontal Oil wells. The Shilaif formation was deposited in a deeper water intrashelf basin with thicknesses varying from 600 to 800 ft from deep basin to slope respectively. The formation is subdivided into 3 main composite sequences each with separate source and clean tight carbonates. The well under consideration (Well A-V for the vertical pilot and Well A-H for the horizontal wellbore) was drilled on purpose in a deep synclinal area to access the best possible oil generation and maturity in these shale Oil plays. Due to the stacked nature of these thick high-quality reservoirs, a pilot well is drilled to perform reservoir characterization and test hydrocarbon type and potential from each bench. Fracturing and testing are performed in each reservoir layer for the primary purpose to evaluate and collect key fracturing and reservoir parameter required to calibrate petrophysical and geomechanical model, landing target optimization and ultimately for the design of the development plan of this stacked play. Frac height, reservoir fluid composition and deliverability, pore pressure are among key data collected. The landing point selected based on the comprehensive unconventional core analysis integrated with petrophysical and geomechanical outcomes using post vertical frac and test results. Well A-H was drilled as a sidetrack from the pilot hole Well A-V. This lateral section was logged with LWD Triple Combo while Resistivity Image was acquired on WL. Based on the logging data the well stayed in the target Layer / formation, cutting analysis data for XRD and TOC was integrated with the petrophysical results in A-H well. Production test results from subject were among the highest rate seen during exploration and appraisal of this unconventional oil plays and compete with the current commercial top tier analog unconventional oil plays. Achieving those results in such early exploration phases is huge milestone for ADNOC unconventional exploration journey in UAE and sign of promising future development.

2021 ◽  
Author(s):  
Maria Cecilia Bravo ◽  
Yon Blanco ◽  
Mauro Firinu ◽  
Tosi Gianbattista ◽  
Eriksen Martin ◽  
...  

Abstract In complex and sensitive environments such as the northern Barents Sea, operations face multiple challenges, both technically and logistically. The use of logging while drilling (LWD) technology mitigates risks and assures acquisition of formation evaluation data in a complex trajectory. All data gathering was performed in LWD and provided the kernel for interpretation; alternate scenarios utilizing pipe conveyed wireline elevated risk factors as well as higher overall costs. Novel technology was required for this data acquisition, including fluid mapping while drilling (FMWD) that allows fluid identification with the use of downhole fluid analysis (DFA) using optical spectrometry as well as the retrieval of downhole fluid samples and a unique sourceless multifunction LWD tool delivering key data for the petrophysical evaluation. This paper presents a case study of the first application of a combination of FMWD and a petrophysical LWD toolstring in the Barents Sea. An excellent contribution to the operator of the PL229 that have pushed the boundaries of the formation sampling while drilling and set the basis to challenge the potentiality of this technique and improve the knowledge of the methodology that are the ultimate goals of this paper. Methods, procedures, process Hydrocarbon exploration, production, and transport in the Barents Sea are challenging. The shallow and complex reservoirs are at low temperature and pressure, potentially with gas caps. The Goliat field is the first offshore oil development in this environment, producing from two reservoirs: Realgrunnen and Kobbe. As part of the Goliat field infill drilling campaign with the aim of adding reserves and increase production, PL229 license operator drilled a highly deviated pilot hole to confirm hydrocarbons contacts in the undrained Snadd formation, which lie between two producing reservoirs. A successful data acquisition would not only provide information on the structure of the reservoir but would also assess the insitu movable fluid: type of hydrocarbon or water. FMWD allowed insitu fluid identification with the use of DFA, enabling RT evaluation of hydrocarbon composition as well as the filtrate contamination prior to filling the sampling bottles for further laboratory analysis. All data was acquired while drilling and using a comprehensive real-time visualization interface. Results, observation, conclusion Extensive prejob planning was conducted to optimize the operation. Dynamic fluid invasion simulations were used to estimate the required cleanup times to reach low contaminations. Simulations showed there was significant advantage in cleanup times when sampling soon after drilling. Honoring the natural environment, a unique sourceless multifunction LWD tool was used to acquire data for petrophysical evaluation-GR, resistivity, radioisotope-free density and neutron porosity, elemental capture spectroscopy, and sigma. Fluid mapping in a single run was key to efficiently resolve the insitu fluid type and composition. Critical hydrocarbon samples were collected soon after the formation was drilled to minimize mud filtrate invasion and reduce cleanup times. Multiple pressure measurements were acquired and six downhole fluid samples at low contamination (∼3% confirmed by laboratory) collected at several stations in variable mobilities. One scanning station was done at a zone were a physical sample was not required to confirm absence of gas cap. The DFA capabilities and ability to assess composition and control the fluid cleanup from surface allowed critical decisions to complete the acquisition program in this remote complex environment, all while drilling. In conclusion, FMWD results facilitated the placement decisions of the horizontal drain in this reservoir. This green BHA is unique in the LWD world. It eliminates radioactive source-handling and all related environmental risks to provide a comprehensive reservoir characterization. FMWD contributes formation pressure and fluid characterization and enables the physical capture of fluid samples in a single run. The combination of these two technologies completed the formation and fluid evaluation needs in this remote and environmentally sensitive area while drilling.


2020 ◽  
Author(s):  
Kristiati Eko Andreastuti ◽  
Bambang Bintarto ◽  
Basith Furqon

2001 ◽  
Vol 16 (supp01c) ◽  
pp. 1175-1177 ◽  
Author(s):  
◽  
Paul Chang

The DOIM (Dense Optical-electrical Interface Modules) is a custom-designed optical data transmission module employed in the upgrade of Silicon Vertex Detector of CDF experiment at Fermilab. Each DOIM module consists a transmitter(TX) converting electrical differential input signals to optical outputs, a middle segment of jacketed fiber ribbon cable, and a receiver (RX) which senses the light inputs and converts them back to electrical signals. The targeted operational frequency is 53 MHz, and higher rate is achievable. This article outlines the design goals, implementation methods, production test results, and radiation hardness tests of these modules.


Author(s):  
F. Hapke ◽  
M. Reese ◽  
J. Rivers ◽  
A. Over ◽  
V. Ravikumar ◽  
...  
Keyword(s):  

1998 ◽  
Vol 1 (1) ◽  
pp. 83-107 ◽  
Author(s):  
Khaled Abdullah ◽  
Howard Jackson

This paper investigates what types of idioms are most likely to be transferred while learning a second language. The subjects of the study were 120 advanced Syrian learners of English. The comprehension of 80 English idioms was tested by a multiple-choice test and an English-into-Syrian Arabic translation test. The same idioms were also tested for production by a Syrian Arabic-into-English translation test. Results showed that learners scored higher in the comprehension and production test of cognate idioms because of positive language transfer. Language transfer had a negative effect when processing English idioms which have false cognate equivalents in Syrian Arabic. However, with English idioms that have pragmatic equivalents and those which have no Syrian equivalents at all, the factor of transfer is replaced, as a strategy, by metaphoric association and pragmatic knowledge of the world. The study concludes that the degree of similarity to a native language idiom does not necessarily help in the process of idiom comprehension or production. Meanwhile, the linguistic differences between the English idiom and the Syrian idiom do not automatically lead to problems in comprehending L2 idioms.


2019 ◽  
Vol 5 (2) ◽  
pp. 154
Author(s):  
Igo Masaid Pamungkas ◽  
Muslikah Muslikah

This study was to determine the relationship between emotional intelligence and empathy for altruism in class XI of Mathematics and Natural Sciences in SMA N 3 Demak, Central Java. The method used is quantitative. Where the source of the initial research researchers conducted interviews with BK teachers in schools, which was followed up with the distribution of psychological scales in the second study and documentation. Furthermore, data analysis was performed using quantitative data analysis. Data validity test is carried out with the application of SPSS 21. The results of the data test results in this study can be useful for BK teachers where it can be a means of making new breakthroughs in providing counseling services in the private and social fields that can be applied both with classical services, group guidance or counseling group.


2016 ◽  
Vol 2 (3) ◽  
Author(s):  
Kasmet T. Niyongabo ◽  
Scott B. Nokleby

A proof-of-concept detector prototype capable of collecting and storing radiometric data in the jet boring system (JBS) during pilot hole drilling at the Cigar Lake uranium mine is presented. Cigar Lake is the world’s second highest known grade uranium mine and is located in northern Saskatchewan, Canada. Variant design is used to design, develop, test, and implement the detector’s firmware, software, and hardware. The battery-powered detector is attached inside a JBS drill rod to collect radiometric data through the drilling cycle. A readout box is used to initiate the detector, recharge the battery, and download radiometric data after the pilot hole drilling cycle is complete. Functional testing results are presented, and comparative test results between the JBS gamma probe and the AlphaNUCLEAR Hi-Flux probe are evaluated. Field data collected from a pilot hole are plotted against the pilot hole’s driving layout and jetting recipe to show the accuracy of the readings collected.


2021 ◽  
pp. 43-54
Author(s):  
N. A. Griva ◽  
P. V. Gavrilov ◽  
E. G. Sokolovich

Quantification of emphysema has been a topic of research for many years due to the time-consuming process that it requires and the subjectivity of the visual quantification of emphysema. In recent years there are a lot of studies dedicated to the comparison of automatic analysis data with the results of functional pulmonary tests. The previously used Tiffno index-based system for assessing the severity of chronic obstructive pulmonary disease (COPD) has lost its independent value, so today it is recommended to establish the diagnosis and stage of the disease taking into account the frequency and severity of exacerbations. Thus, there is a need to search for more objective diagnostic criteria, which can become an AI-based emphysema quantification.


2018 ◽  
Vol 13 (1) ◽  
pp. 81-87
Author(s):  
Dewi Rokhanawati ◽  
Umu Hani Edi Nawangsih

Abstract: Pregnancy is the first phase of the reproductive cycle that needsto be prepared by the bride. At the time of pregnancy occurs share thechanges that will affect the physical and psychological condition of women.Objective: to determine the effect of premarital education preparednessfirst pregnancy at bride in KUA Region Bantul, Yogyakarta in 2014.Methods: Data were collected through questionnaires pre and posttest to43 bride chosen by accidental in September 2014. Analysis data by pairedt test. Results: show after educational intervention premarital decrease ofrespondents who are not ready to face the first pregnancy of 57.5% downto 39.5%. Premarital education affect the first pregnancy preparedness onthe bride at KUA Bantul district of Yogyakarta in 2014 (p value = 0.000).Suggestion: to KUA Bantul district is expected to cooperate with the localhealth center to revive the course program bride.


2017 ◽  
Vol 11 (04) ◽  
pp. 486-490
Author(s):  
Fereshteh Shafiei ◽  
Maryam Firouzmandi ◽  
Moona Zamanpour

ABSTRACT Objectives: The hybrid layer at the interface of resin-modified glass ionomer cements and dentin is prone to degradation by endogenous matrix metalloproteinases. We aimed to investigate the effect of two types of collagen crosslinkers, carbodiimide and proanthocyanidin (PA), on immediate and medium-term bond strength of a resin-modified glass ionomer to dentin. Materials and Methods: Seventy-two molars were flattened on the occlusal surface to expose dentin. The specimens were divided into control, 1-ethyl-3-(3-dimethylaminopropy) carbodiimide hydrochloride (EDC), and PA groups (n = 24). In the EDC and PA groups, carbodiimide and PA solutions were applied for 1 min, respectively. Resin-modified glass ionomer was bonded. Half of the specimens in each group were tested for shear bond strength after 24 h and the other half were tested after 6 months. Statistical Analysis: Data were analyzed with SPSS version 16 (SPSS Inc, Chicago, IL, USA), using two-way ANOVA, and subgroup analysis was performed using one-way ANOVA, Tukey's test, and t-test. Results: Two-way ANOVA showed that treatment and time affected the bond strength. Carbodiimide and PA did not affect the immediate bond strength (P = 0.51). After 6 months, the bond strength of the EDC group was significantly lower than that of the control and PA groups. Bond strength of the control and PA groups increased after 6 months (P ≤ 0.002). Conclusion: PA did not interfere with maturation of RMGIC unlike carbodiimide. Therefore, it can be suggested as an matrix metalloproteinase inhibitor before bonding of resin-modified glass ionomer to dentin.


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