Evaluation of Rotary Jetting Tool Application for Matrix Acid Stimulation of Carbonate Reservoir in Southern Area Field of Saudi Arabia

Haldar, Surajit; Al-Jandal, Ahmed A.; Al-Driweesh, Saad; Al-Sarakbi, Samer; Espinosa, Mauricio

doi:10.2523/iptc-12023-ms

Cited by 5 publications

(1 citation statement)

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“…Sua utilização nasáreas das imagens médicas [VAN GINNEKEN et al (2001), MCINERNEY & TERZOPOULOS (1996)]e de alta tensão 1 , por exemplo,é ainda questão crucial e desafiadora. Na engenharia de petróleo, não obstante a modelagem confiável de frentes de avanço seja demanda de grande importâcia [JACOBSEN et al (1995), NUNES et al (2009), HALDAR et al (2008), WENNBERG et al (2001), LARTER et al (2008, DIAZ et al (2007), MENDEZ et al (2005), GLIMM et al (1983…”

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Contornos deformáveis paramétricos adaptativos

Santana¹

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According to the original definition of Terzopoulos, deformable models are curves or surfaces formed by connected points that simulate elastic bodies. By overcoming many limitations associated with the manual procedure and the traditional techniques of processing, deformable contours have become popular. Although the use of deformable contours is vast and growing aspects of the theory still demand attention. Many references have been made to the limitations of the technique imposed by the process evolution process. The convergence to minimum and unwanted bundling points, for example, limit the use of the technic on noisy and complex scenarios as those found in oil reservoirs. This work presents a novel approach to

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Section: Capítulo 1 Introduçãounclassified

Contornos deformáveis paramétricos adaptativos

Santana¹

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Case History: Successful Application of Combined Rotary-Jetting and MLT to Stimulate Dual-Lateral Producer in Ghawar Field

Al-Buali

Al-Arnaout

Al-Shehri

et al. 2009

SPE Middle East Oil and Gas Show and Conference

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The implementation of multilateral wells in Saudi Aramco, and in the southern area of Ghawar field in particular, is being increased for production and cost optimization. Accessing and stimulating individual laterals is a challenge that requires an optimum design in terms of cost, application and efficiency. This paper will describe a unique utilization of a combined high energy rotary-jetting tool with a multilateral tool (MLT) to access and treat a dual-lateral oil producer in the southern part of Ghawar field. The main purpose of utilizing this combined tool was to acid wash the Arab-D horizontal section of both laterals with nitrified hydrochloric acid using coiled tubing (CT). The objectives of the treatment were to increase flowing bottom-hole pressure (FBHP), remove formation damage and return the well to production. The rotary-jetting tool is a high energy jetting tool that maximizes performance of treatment fluids while minimizing the need for large acid volumes. It can be run with the MLT to enable accessing and stimulating both laterals in a single trip. The implementation of the combined tool resulted in accessing and stimulating both laterals successfully. The well was returned to production at a rate of 11,000 barrels of oil per day (BOPD). The volume of acid was reduced due to utilizing the rotary-jetting tool, which maximized fluid treatment performance. This paper will cover the whole cycle of candidate selection, job design, execution, post job evaluation and conclusion. Introduction Oil drilling strategy in the world as a whole, and Saudi Arabia in particular, has shifted drastically from drilling vertical wells to drilling horizontal and multilateral wells. This increasing trend is a result of enhanced productivity provided by maximizing reservoir contact. These wells have proven successful and economical for field development in oil and gas fields. Although drilling practices and experiences have drastically progressed, there are still limitations on the accessibility of the laterals for treatment or logging. During the past few years, there was a considerable advance in rigless re-entry techniques. The well intervention work can now be conducted on an individual lateral as a result of utilizing the MLT re-entry tool with CT pipe1, 2 & 3.

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Completion Fluids Challenges in Maximum Reservoir Contact Wells

Al-Yami

Nasr‐El‐Din

2009

SPE International Symposium on Oilfield Chemistry

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Most drill-in fluids contain weighting solids. The overbalance required between the drill-in fluid and reservoir to keep the well under control will force the weighting solids to enter the formation and cause damage, Bailey et al. (1999). Horizontal wells are intended to maximize reservoir drainage and minimize water production due to water conning, Beal et al (1996). However, unlike vertical wells, poor acid distribution occurs during matrix acidizing. Coiled tubing cannot reach the total depth of the well because of some limitations such as large washouts, length of the reel and diameter of the coil, which makes acidizing horizontal wells non-effective, (Nasr-El-Din et al., 2004b). In addition, conventional weighting solids used in drill-in fluids when entered the reservoir formation will not easily flow back into the wellbore when production resumes, Bailey et al. (1999). Format drill-in fluids with low solids content can then be used in horizontal wells, Simpson et al. (2005). However, they are expensive and require close monitoring of the pH, Nasr-El-Din et al. (2004a). Formation damage from all drilling fluids are still a concern and they are more problematic in horizontal and maximum reservoir contact wells and their damage require chemical and mechanical removal methods. Cleanup of drilling-fluid filter cake in long horizontal and multilateral wells is a difficult task. Both mechanical water jetting and/or circulating new volumes of low solids drilling fluids have certain limitations. Other methods of removing filter cake such as using chemical means for example mineral acids, esters, oxidizers, chelating agents, viscoelastic surfactants and enzymes are also limited at certain conditions. Intensive lab work has been done to evaluate mechanical and chemical methods in removing formation damage induced from drilling fluids. However, no work was done before to the best of author's knowledge in comparing these removal methods (mechanical and chemical) for different drill-in fluids supported with field cases to provide guidelines on when to use or avoid. The paper will review chemical means used to remove filter cake. Limitations of each method are highlighted. Implications to the field are discussed. Introduction Ezzat (1993) showed the requirements for water-based drill-in fluids for horizontal wells such as physical stability, cutting transport, lubricity and formation damage control. The hydrostatic pressure of the drill-in fluids must be high enough to control the formation pressure but not too high to avoid fracturing the formation and losing circulation. Using bridging materials are important to minimize filtrate invasion, minimize fine migration and improve hole stability. In deviated wells, cutting accumulation and settling while drill-in fluids in static motion is a big concern. The drill-in fluids should have good rheological properties to prevent solids and cuttings settling. He also mentioned that core flood testing is important to evaluate drill-in fluids formation damage as well as lab evaluation at reservoir temperature and pressure.

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Evaluation of Rotary Jetting Tool Application for Matrix Acid Stimulation of Carbonate Reservoir in Southern Area Field of Saudi Arabia

Cited by 5 publications

References 0 publications

Contornos deformáveis paramétricos adaptativos

Contornos deformáveis paramétricos adaptativos

Case History: Successful Application of Combined Rotary-Jetting and MLT to Stimulate Dual-Lateral Producer in Ghawar Field

Completion Fluids Challenges in Maximum Reservoir Contact Wells

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