... Abstract Obtaining log data from horizontal wells has in the past been considered a very difficult and expensive task. Added to this is the question as to whether log data presented any value as far as reservoir understanding, production enhancement or completion techniques were concerned...

... Abstract Since the late 1980's there has been significant primary development of thin heavy oil and bitumen pools with horizontal wells in Western Canada. These pools were previously not developable as they did not have high enough transmissivity for economic vertical well development...

... used routinely to guide horizontal wells to intersect vertical wells. In this application, the sensor is deployed on a wireline in an uncased interval of the vertical well near the proposed intersection depth. RMR provides steering information to the driller up to 50 meters from the target...

... Abstract More than 10 000 horizontal wells have been drilled in the Westem Canadian Sedimentary Basin (WCSB) between 1987 and the present. About 5 000 of these wells have been drilled in conventional oil pools on primary production, and about 1000 wells have been drilled in heavy oil bitumen...

... ABSTRACT The Winter pool in Saskatchewan has been developed using horizontal wells 800 to 1400 meters long at 75 meter nominal spacing. The horizontal sections are located near the top of the reservoir to maximize the area swept by the coning behavior of the bottom water. Section 31-42-25 W3M...

... to a loss of income. In this study, the performance of horizontal wells and vertical wells in gas condensate reservoirs is investigated under various depletion schemes. The expected low drawdown pressure for horizontal well, compared to vertical well for the same flow rate, considerably reduces retrograde...

... Abstract To date, 20 horizontal wells have been drilled in Colombia, 16 in sandstone and 4 in carbonate reservoirs. In carbonate, the economical success rate is 50% but in sandstone it is 88%. In general, wells in Colombia are expensive. The vertical well cost varies from 2 million dollars...

... fractures truncate at marl seams in the Kinlaw core, the close proximity of open fractures, giving a high threshold frequency, made this horizon a favorable target for a horizontal well. Production for this well in terms of cumulative totals was: 102515 BBLS oil; 69268 MCF gas, at the beginning of 1999...

... Abstract With the advent of horizontal wells in Improved Oil Recovery (IOR) of heavy oils, a distinct change is tacitly taking place in our approach to improved recovery of oil: from displacing mobilized oil in a flood pattern from injector to producers over long distances of the order...

... the tubing. When the ratio of reservoir/well conductivity is very small ( G≪1 ), then the productivity index of horizontal well is significantly affected by the geometrical parameters of the reservoir. From our results it can be deducted in the case G≪1 that: the distance from the external boundary...

... Abstract This paper describes a process that has improved production, reduced costs, saved time, and dramatically improved the results of fracture stimulating low permeability horizontal wells. The use of both propped and acid fracture treatments will be described. The process has been used...

... Abstract A series of solutions corresponding to various conditions are given in a multiple-fractured-horizontal well model. We were able to develop a fast, robust and easy to use software program, a screening-tool product, we hope will be of significant benefit to companies in the petroleum...

... longevity. Production from the Uracoa Field consists of heavy crude ranging from 11° to 16° API. The initial redevelopment completion scenario used horizontal wells with slotted liners in open hole. However, subsequent breakthrough of water caused catastrophic sand production that plugged the wells where...

... Abstract This paper presents a comprehensive study on the productivity and flow efficiency of horizontal wells completed with slotted-liners or perforations. The study is based on a semi-analytical model that couples the flow equations in the reservoir and wellbore. The reservoir model takes...

... Abstract A fully implicit, three-dimensional simulator with local refinement around the wellbore is developed to solve reservoir and horizontal well flow equations simultaneously, for single-phase liquid and gas cases. The model consists of conservation of mass and Darcy’s law in the reservoir...

... Abstract Information obtained from testing horizontal wells is very useful in reservoir characterization, in this paper the experience of horizontal wells in the gas reservoir of TIN FOUYE TABANKORT (TFT), Algeria is illustrated, as well as the contribution in characterizing natural fractures...

... of such results, laboratory work is being undertaken to verify, and understand these results. We also encourage field-pilot testing of this process. mechanism horizontal well soak period production well steam-assisted gravity drainage upstream oil & gas steam chest deposit thermal method steam...

... Abstract The first horizontal well was drilled in Hungary in 1989 and thereafter 60 horizontal sections were completed. The 76% of these wells are in the Algyo field, which is the largest HC accumulation in the Pannonian basin. After a 25-year production, the inaccessible hydrocarbons, which...

... Abstract The limited resolution of conventional seismic surveys often results in challenges to successful reservoir development. Reservoir structure and thickness may not be determined from the seismic to the level of detail necessary, affecting the placement of the horizontal well. We describe...

... tensor as well as the effective length of the horizontal well. Hence, and for the first time, the permeability tensor (Kx, Ky, Kz), and the vertical permeability anisotropy (Kv/Kh) were obtained. The results of the interpretations lead to a verity of information and correlations. Sensitivity studies...