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Sud-Est Development Region
Zion Oil & Gas, Inc. announced on 3 December that it had been granted a 6-month license agreement--the New Megiddo 428--over the previous 99,000-acre Megiddo-Jezreel license area in northern Israel. Zion expects to spud the Megiddo-Jezreel #2 (MJ02) well at its current well location near Bet She'an by the middle of this month. The drilling rig and equipment departed from Constanta, Romania, in early November and arrived at the port of Haifa, Israel. All necessary drilling equipment and supplies have either arrived at the rigsite or are in port awaiting clearance. The drilling crew is working to assemble the rig in time for Israeli governmental inspections scheduled this week.
Country:
- Europe > Romania > Sud-Est Development Region > Constanța County > Constanța (0.28)
- Asia > Middle East > Israel > Haifa District > Haifa (0.28)
SPE Disciplines:
This article, written by JPT Technology Editor Judy Feder, contains highlights of paper SPE 194324, “The World’s First Offshore Multilateral Well Completed With Multistage Proppant Fracturing: A Case Study From Offshore Black Sea,” by Andrew Tomlins, OMV; Joel Conrad, SPE, Packers Plus; and Bogdan Bocaneala, OPECS, prepared for the 2019 SPE Hydraulic Fracturing Technology Conference and Exhibition, The Woodlands, Texas, 5–7 February. The paper has not been peer reviewed. The complete paper discusses the successful execution of the first offshore multilateral well completed for multistage high-pressure proppant stimulation, according to the authors, in the Black Sea offshore Romania. The authors discuss the drivers that led the operator to trial a multilateral well; the selection, planning, and final completion solution; and the lessons learned. Field Background Lebada Vest, located 95 km offshore northeast of the city of Constanţa, is the largest offshore Romanian oil field currently in production. It was discovered in 1984 and has been in production since 1993, and thus now faces the challenges and strong investment requirements associated with a mature field. Hydraulic fracturing has been used in the field’s low-permeability-formation wells since 1992, mainly in vertical or slanted wells. Completion Challenge With only one platform slot left and a significant undrained area of the reservoir, the operator had to maximize hydrocarbon recovery through a single well which, because of pressure to increase daily production, had to be finalized in 1 year. Building on field experience gained since 2008 in multistage proppant stimulation, a detailed screening and evaluation of multilateral completion technologies was performed. The focus was on developing a concept that would minimize risks during execution while meeting cost and lead-time objectives, which necessitated customizing the chosen Technology Advancement for Multilaterals (TAML) Level 3 completion design and installation methodology. To maximize rig-time efficiency, the well was executed in two phases: Drilling and lower completion installation of both branches with a drilling rig Stimulation and upper completion installation with the platform’s workover rig With six stages in each lateral, the high-pressure stimulation was executed by a converted supply vessel in four sailings, necessary to reload materials. To meet the delivery schedule, ensure simplicity, and leverage operator experience, the completion was undertaken with no dedicated multilateral hardware. Instead, the operator used standard, multistage, stimulation openhole completion equipment and appropriately engineered bent joints to exit the main bore. With initial production rates higher than anticipated, the well proved considerably more economical than drilling two horizontal wells with equivalent reservoir coverage. The success of this well serves as a proof of concept and provides increased confidence in delivering reliable, cost-effective, multilateral wells, even under tight time constraints and in areas or with operators with no history of multilateral completions. Identifying Multilateral Completion Requirements The operator’s field-development team investigated single, dual, and trilateral well-design feasibility against agreed design criteria. The principal objective was to maximize the chance of success through an appropriately risk-minimized design using standard, field-proven tools and techniques. Completion-design criteria were carried from the previous (single-lateral wells) field-development campaign in terms of production objectives, intervention capabilities, and logistics. The complete paper discusses the effect of general well design, junction, stimulation, intervention, rig strategy, and logistics and experience on the completion requirements.
complete paper, completion, Directional Drilling, drilling operation, drilling rig, installation, lateral, leg 1, leg 2, multilateral offshore well completed, multilateral well, multistage proppant fracturing, operator, platform, proppant fracturing, proppant stimulation, stimulation, Upstream Oil & Gas, workover rig
Country:
- Europe > Romania > Sud-Est Development Region > Constanța County > Constanța (0.25)
- North America > United States > Texas > Montgomery County > The Woodlands (0.24)
Genre:
- Summary/Review (0.89)
- Research Report (0.75)
SPE Disciplines:
- Well Drilling > Drilling Operations > Directional drilling (1.00)
- Well Completion (1.00)
The complete paper discusses the successful execution of the first offshore multilateral well completed for multistage high-pressure proppant stimulation, according to the authors, in the Black Sea offshore Romania. The authors discuss the drivers that led the operator to trial a multilateral well; the selection, planning, and final completion solution; and the lessons learned. Lebada Vest, located 95 km offshore northeast of the city of Constanţa, is the largest offshore Romanian oil field currently in production. It was discovered in 1984 and has been in production since 1993, and thus now faces the challenges and strong investment requirements associated with a mature field. Hydraulic fracturing has been used in the field's low-permeability-formation wells since 1992, mainly in vertical or slanted wells.
completion, Directional Drilling, drilling operation, hydraulic fracturing, junction, lateral, leg 1, leg 2, lower completion, multilateral offshore well completed, multilateral well, multistage proppant fracturing, objective, operator, proppant stimulation, requirement, stimulation, Upstream Oil & Gas
Country:
- North America > United States > Texas (0.30)
- Europe > Romania > Sud-Est Development Region > Constanța County > Constanța (0.25)
SPE Disciplines:
- Well Drilling > Drilling Operations > Directional drilling (1.00)
- Well Completion > Hydraulic Fracturing (1.00)
Russian O&G Companies Face Unique Challenges in New Exploration Locations – Lukoil Offshore Exploration Deepwater Romania Black Sea
Mian, Danial (Lukoil Overseas Offshore Projects Inc.) | Roberts, Jason (Transocean) | Williger, Mike (Lukoil Overseas Offshore Projects Inc.) | O'Keeffe, Philip (Transocean)
Abstract Lukoil Overseas has been partnering in deep water exploration campaigns since 2010. First operated deep water well was drilled in mid-2013. This well was drilled offshore Sierra Leone. Four other Lukoil operated wells were drilled successfully in Ghana and Ivory Coast after that. Lukoil utilized Ocean Rig's Eirik Raude and Transocean's GSF Jack Ryan for this multi-well campaign in West Africa. This project was managed by experienced Lukoil Overseas Offshore team based out of Houston. At the beginning of 2014, Lukoil Overseas executive team made a decision to drill three wells offshore Romania. These wells were planned in two offshore blocks, Rapsodia and Trident. Transocean's GSF Development Driller II was contracted in early part of 2014 for this multi-well campaign. Mobilization from US GOM to Romania Black Sea in a short duration was extremely challenging. The rig needed to pass under two suspension bridges in Turkey's Bosporus Strait. It would be necessary to remove top of the dual-activity-derrick to pass the rig under the two suspension bridges. Major engineering design work and manufacturing of equipment was required. Derrick re-installation and commissioning of all the drilling equipment was planned in Constanta, Romania. Winterization of the rig was also needed to successfully operate in the harsh weather conditions of Romania. Derrick removal and rig winterization were planned at the same time to save critical path time. The whole project took over 300,000 man-hours. On June 10 2014 the rig arrived in Palermo to start derrick removal and winterization. On September 6 2014 the rig arrived in Bosporus Strait to go under the bridges. Rig sailed to Constanta where the final re-installation of the derrick took place. Rig mobilized to location on October 31 2014. Well was successfully spud on November 4 2014. This complex project showed the experience and flexibility of both Lukoil and Transocean teams. This paper discusses the unique technologies Russian O&G Operators use to seek new exploration opportunities in harsh environments.
Country:
- Europe > Romania > Sud-Est Development Region > Constanța County > Constanța (0.45)
- Asia > Middle East > Turkey (0.34)
SPE Disciplines:
Summary 2 D industry seismic data acquired in the Focsani Basin of Romania prove ideal for imaging deep crustal structures related to the tectonic evolution of one of the youngest yet deepest basins in the world. Fundamental plate tectonics research blends with oil exploration techniques to provide an image of the upper 60 km of the basin. The purpose of this study was to identify the best processing techniques that would provide deep information while preserving the shallow data. Introduction Processing of 2D shallow (5s) seismic data is presently done routinely with software that was developed for this purpose. However no software is designed for the sole purpose of processing deep seismic data. Here we present processing steps undertaken for processing 2 seismic lines with recording time of 20s TWTT using Landmark ProMAX seismic processing package. The deep seismic data presented here were collected in the Focsani Basin of the SE Carpathian foreland as part of oil exploration activities. The acquisition parameters are exploration-type, only the record length being increased to 20s. Some of the main problems of processing the data were related to signal depth penetration and its recovery, attenuation of multiples and velocity analysis. Standard industry offsets did not provide sufficient NMO and the thickness of the basin further complicated removal of multiples. The evolution of the basin is at odds, spatially and temporally with the formation of the Eastern Carpathians and to this effect the study of the deeper crustal structure was envisioned as a way of providing constraints on the main tectonic processes involved in the development of the SE Carpathian region. Geologic Setting The foreland basin in front of the SE Carpathians, Romania, formed during and after the Alpine continental collision bears significance due to its (1) rich and extensively exploited oil fields, (2) vicinity to the intermediate depth Vrancea Seismogenic Zone, (3) thick sedimentary cover (~ 18 km Miocene-Quaternary), (4) ongoing subsidence (~ 2mm/year), (5) localized and unusually low topography, (6) crustal scale faults oriented NNW-SSE, (7) documented normal faults concentric to the Vrancea area and (8) wide spread, low magnitude shallow seismicity. One of the most debatable features associated with the SE Carpathians fold and thrust belt is the significant concentration of intermediate depth earthquakes (70-210 km) in an extremely confined and vertical volume, named Vrancea Seismogenic Zone. In the context of plate tectonics this seismicity was interpreted as being produced by the sinking of an oceanic slab. However, new interpretations envision an entirely different process, namely continental delamination of over thickened continental lithosphere (Knapp et al., 2005), also responsible for the active subsidence of the Focsani Basin. In a broader sense, this study examines the relationships between crustal foreland basin deformation and VSZ, foreland deformation at the crustal scale suggesting a geometric association with the Vrancea mantle source region and implying a mechanical coupling of the seismogenic body with the overlying crust. Part of the SE Carpathian foredeep, the Focsani Basin is made up of sands, shale and evaporites that thicken to the west.
Oilfield Places:
- Europe > Slovakia > Pannonian Basin (0.99)
- Europe > Serbia > Pannonian Basin (0.99)
- Europe > Romania > Pannonian Basin (0.99)
- (3 more...)
SPE Disciplines:
ABSTRACT: The Caspian oil became a viable alternative for the Persic Gulf oil fields. The six Caspian Sea round countries: Russian, Kazakhstan, Azerbaijan, Turkmenistan, Uzbekistan and Iran, have oil fields estimated as 200 billion bbl, at a value of 400 billion USD. The great oil companies and the countries involved in this great business, are all interesting to find as possible cheap and secure oil pipelines routes to Europe. The Central Europe, particularly Czechia, Poland, Hungary, Slovakia, with about 55 million inhabitants, represents an attractive and in expansion market. This one could be extented by an economic resurgence of Bulgaria and Romania (together 33 million inhabitants) or rebuilding of Serbia (10 million inhabitants). The shortest and the most efficient route of the oil pipelines between Caspian Sea and Central Europe is the route: Caspian Sea - Georgia (Supsa) - Black Sea - Romania - Hungary - Trieste. This route is an advantageous alternative by the side of pipelines variants, which pass through Turkey and Ukraine (Russia) and which attend another oil market. Romania represents the key of the Central European route, thanks to its geo-strategic position. The main Romania best cards are: the geographical position (the country is in the economic routes cross which links from the Black Sea to Nord Sea and from the Baltic Sea to the Mediterranean Sea), the political stability (the route is outside of the ethnical, political and religious conflicts), the existence of a strong substructure (of a refinery capacity equal as 30-35 million tons/year, an oil pipelines compact network, the position of Constanta seaport, the biggest on the Black Sea) and a very good experience and professional high level in oil field. All these elements recommend Romania like a very good opportunity for the great investitors and a serious partners in oil field market.
Country:
- Asia > Middle East > Turkey (0.68)
- Europe > Romania > Sud-Est Development Region > Constanța County > Constanța (0.30)
- Europe > Italy > Friuli Venezia Giulia > Trieste Province > Trieste (0.28)
Oilfield Places:
- Asia > Middle East > Turkey > Selmo Field (0.99)
- Europe > Slovakia > Danube Basin (0.89)
- Europe > Romania > Black Sea Basin (0.89)
SPE Disciplines: Facilities Design, Construction and Operation > Pipelines, Flowlines and Risers (0.75)
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