First Application of Heat-Activated, Rigid Rapid-Fluid System in Deepwater Environment in Mexico Helps to Cure Severe Loss of Circulation: A Case History

Castro, Jorge; Solis, Luis; Urdaneta, Javier; Morales, Jose Victor Arreola

doi:10.2118/139929-ms

Cited by 10 publications

(3 citation statements)

References 3 publications

(2 reference statements)

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“…The RSF system has proven successful for curing severe dynamic and static losses by pumping treatments through the drill string bottom hole assembly (BHA) (no trip out required) and taking advantage of its highly controllable fast setting properties. Some of the notable past work and field implementation of RSF to control losses are described elsewhere [1][2][3][4][5] . The chemical and mechanical properties of RSF having better and additional characteristics over as compared to cement or bridging LCM are as shown in Table 1.…”

Section: Rapid Setting Fluid Developmentmentioning

confidence: 99%

An Innovative Approach for Curing Severe Loss Control Problems in Mumbai Offshore while Drilling - A case study

Rastogi

Lal

Singhal

et al. 2015

SPE Oil &Amp; Gas India Conference and Exhibition

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This paper relates severe lost circulation problems often encountered when the well is drilled overbalanced through high-permeability, fractured, or easily fractured formations. As numbers of LCM pills, neat cement plugs were placed in damaging and non-damaging reservoirs, resultant failed to provide an adequate solution.Recently, severe mud loss problems were encountered during drilling in Mumbai Region from depleted reservoirs, unconsolidated, highly permeable, fractured and fragile limestone formations, both from nonproducing and producing reservoirs (L-III, L-II, L-I, H1A, H3B, etc.). The losses range from 100 BPH to total loss. Attempts are made to stop the losses with the placement of advanced lost circulation treatments. To mitigate these types of losses, an innovative technique developed with a temperatureactivated Rapid Setting Fluid (RSF) Pill from indigenously available chemicals and used as an alternative to LCM / cement plugs for severe loss control problems in Mumbai Offshore. The RSF system has proven successful for curing severe dynamic and static losses by pumping treatments through the drill string bottom hole assembly (BHA) (no trip out required) and taking advantage of its highly controllable fast setting properties.The RSF pill is a stoichiometric mixture of magnesium compound, forming hard and a series of high mol. wt. magnesium inorganic poly-hydrates, displaying characteristics of conventional cement slurry in pumpability, but very different chemically. As the RSF Pill enters the lost zone, it sets rapidly (a rapid transition from liquid to solid) and builds sufficient compressive strength within 5-6 hrs. The reaction causing solidification is wholly a function of time and temperature and unaffected by hydrostatic pressure. The pill is non-damaging as it is non-invasive, sets at the lost zone mouth and 90-100 % soluble in 15 % Hydrochloric acid. The pill can be successfully used up to 140°C BHST.The field trial has been carried out successfully in two wells of Mumbai Offshore: N_12#3Z (Mumbai High L-III reservoir) in partial loss conditions and HG#6H (Miocene Bandra Limestone formation) with total losses. It has also established that the new Loss Control Solution, RSF Pill can be placed successfully in all types of lost zones (like L-III, L-II, L-I, H1A, H3B) to mitigate the mud losses.The paper also details the specific chemical and mechanical characteristics and field performance of the RSF pill. It concludes that the combination of unique fluid properties and best practices in fluid placement procedures plays a vital role in the successful implementation and development in the treatment of loss circulation in limestone formations. This technique is unique, easy, very effective and provides cost benefits.

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Section: Rapid Setting Fluid Developmentmentioning

confidence: 99%

An Innovative Approach for Curing Severe Loss Control Problems in Mumbai Offshore while Drilling - A case study

Rastogi

Lal

Singhal

et al. 2015

SPE Oil &Amp; Gas India Conference and Exhibition

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“…Sanders et al [8] proposed a new highfluid-loss and high-strength lost circulation system to address the lost circulation. Castro et al [9] introduced an application of heat-activated and rigid rapid-fluid system to deal with the severe loss of circulation in deepwater environment and expand the gradient window. Ay et al [10] developed an environmentally friendly silicatepolymer gel system with adjustable viscosity and density to seal shallow water flow and lost circulation in top hole drilling.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Simulation of Lost Circulation in Fracture and Its Control

Cai

Guo

et al. 2021

Geofluids

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Lost circulation has been one of the major problems that impede efficient and cost-saving drilling operations. The nature of lost circulation and its control is not yet fully understood. A method to characterize the mud loss in fracture and the plugging process of lost circulation materials is highly desired to obtain a thorough understanding of mud losses in fracture and provide reference for lost circulation control. This paper presents an easy-to-use method to identify types of lost circulation in fracture and the corresponding control. Three analytical models are presented based on three loss mechanisms, namely, seepage/filtration in a fracture, pipe flow in a fracture, and gravity displacement in a fracture. A numerical model is developed to simulate the deposition of lost circulation materials in fractures and predict the time and the volume of drilling fluid needed for lost circulation control. Case studies with these analytical models provide a deeper insight of this subject. Sensitivity analyses with the numerical model identify the major factors responsible for lost circulation control. High viscosity of drilling fluid may prevent lost circulation, while low viscosity is desired for a fast control of lost circulation. Lowering the density of drilling fluid is another way to prevent the lost circulation and facilitate the deposition of lost circulation materials. Lost circulation materials with high density could deposit faster close to the wellbore and therefore accelerating the control process. High concentration of lost circulation materials is likely to shorten the plugging time, which should be determined referring to the severity of loss. This work provides drilling engineers a practical method for simulating the lost circulation and selecting lost circulation material.

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“…These loss events need to be combated and controlled to enable minimum well construction costs. The usual industry approach to addressing lost circulation events has been using flakes, granular and fibers materials such as graphite, calcium carbonates, mica, nut shells and swelling polymers [7]- [9].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Engineered Cement Plug to Effectively Cure Losses While Drilling in Iranian Oil/Gas Well

Sajjadian¹,

Motlagh²,

Daya

2016

IJG

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Mud losses are one of the most severe problems encountered in drilling. This is commonly known as lost circulation. It can occur in naturally fractured formations and also can be induced in formations through drilling. Mud losses while drilling leading to cost overruns and HSE concerns, primary cement job failure due to not getting the cement up to the desired height resulting in subsequent sustained casing pressure and corrosion, not able to perform work over activity on certain wells due to losses. The objective of this paper is to explain extreme lost circulation problem and introduce cement plug formulation to cure or mitigate this problem. In addition, the cement plug has certain compressive strength that this is proper for use to control lost circulation in field. And finally, the application of a cement plug is described in one well of the Gas Field (National Iranian Oil Company).

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First Application of Heat-Activated, Rigid Rapid-Fluid System in Deepwater Environment in Mexico Helps to Cure Severe Loss of Circulation: A Case History

Cited by 10 publications

References 3 publications

An Innovative Approach for Curing Severe Loss Control Problems in Mumbai Offshore while Drilling - A case study

An Innovative Approach for Curing Severe Loss Control Problems in Mumbai Offshore while Drilling - A case study

Mathematical Simulation of Lost Circulation in Fracture and Its Control

Experimental Study of Engineered Cement Plug to Effectively Cure Losses While Drilling in Iranian Oil/Gas Well

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