Fluid loss control mechanism of using polymer gel pill based on multi-crosslinking during overbalanced well workover and completion

Jia, Hu; Chen, Hao; Guo, Shisheng

doi:10.1016/j.fuel.2017.08.032

Cited by 48 publications

(20 citation statements)

References 23 publications

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“…(4) The molecular weight of FLCA also shows some influence on the compatibility between FLCA and retarder AMPS-IA. (5) The FLCA containing MA also shows excellent fluid loss control ability under high temperature.…”

Section: Discussionmentioning

confidence: 97%

“…Normally, well cementing requires placement of the casing pipe into the well to a specified depth, and then pumping cement slurry into the annular space between the casing and formation through the casing. During well workover, filtration will occur when cement slurry is placed in contact with a permeable formation [ 5 – 7 ]. During application of the cement slurry, the aqueous phase of the slurry escapes into the formation, leaving the cement particles behind.…”

Section: Introductionmentioning

confidence: 99%

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Effect of carboxylic group on the compatibility with retarder and the retarding side effect of the fluid loss control additive used in oil well cement

Guo

et al. 2018

R. Soc. open sci.

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The retarding side effect and the compatibility with other additives are the main problems that limit the field application of the synthesized fluid loss control additive (FLCA). The effect of the type and content of carboxylic acid groups on the retarding side effect of FLCA and the compatibility between FLCA and the retarder AMPS-IA synthesized using 2-acrylamido-2-methyl propane sulfonic acid (AMPS) and itaconic acid (IA) was studied in this paper. The type and content of carboxylic acid group have a great influence on the fluid loss control ability, the compatibility with retarder and the retarding side effect of FLCA. FLCA containing IA or maleic acid (MA) shows better compatibility with retarder than FLCA containing acrylic acid, but the retarding side effect of FLCA containing MA is weaker than that of FLCA containing IA. Thus, MA is the most suitable monomer for synthesizing FLCA having good compatibility with retarder AMPS-IA.

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Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Effect of carboxylic group on the compatibility with retarder and the retarding side effect of the fluid loss control additive used in oil well cement

Guo

et al. 2018

R. Soc. open sci.

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“…Por outro lado, os agentes reticulantes de natureza orgânica envolvem a ocorrência de ligações covalentes com os grupos funcionais do polímero, unindo duas ou mais cadeias poliméricas. Sendo mais estáveis termicamente, foram reportadas aplicações desses sistemas em temperaturas de até 156 °C (JIA et al, 2012;LENJI et al, 2018;JIA et al, 2017). Este comportamento pode ser atribuído à formação de ligações mais resistentes entre os polímeros e os agentes reticulantes (AL-MUNTASHERI et al, 2007;JIA et al, 2012;SENGUPTA et al, 2014;MA et al, 2017;CHEN, 2018).…”

Section: Hidrogéis Para Controle De Conformidade Em Reservatórios De unclassified

Hidrogéis Compósitos Poliméricos Com Possível Aplicação No Controle De Permeabilidade Em Reservatórios De Petróleo: Uma Revisão.

Pereira¹,

Oliveira²,

Mansur³

2019

REPECT

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No cenário energético mundial, as companhias petrolíferas exibem enormes gastos com tecnologias em busca de novas regiões para exploração de petróleo. Portanto, prolongar o tempo de operação nos reservatórios já existentes se tornou uma boa alternativa para atender a demanda de óleo e controlar as adversidades geradas pelas operações de baixa eficiência. Para isso, a técnica de controle de conformidade vem sendo muito discutida no intuito de melhorar a eficiência de varrido e diminuir a água de produção indesejada. Dentre os métodos químicos existentes, os géis poliméricos exibem a capacidade de bloquear as regiões fraturadas ou heterogêneas presentes em reservatórios com problemas de permeabilidade. No entanto, a autonomia destes hidrogéis ainda não foi completamente estabelecida por conta das drásticas condições encontradas nesses reservatórios. Neste contexto, agentes de reforço vêm sendo utilizados para a elaboração de hidrogéis poliméricos compósitos, os quais buscam melhorar as propriedades frente aos sistemas convencionais. Dentre os sistemas de reforço estão: nanosílica, argila, nanotubos de carbono, cinzas volantes de carvão, partículas de asfaltenos, nanocristais de celulose, óxido de grafeno, dentre outras. No geral, a presença destes componentes contribui de maneira semelhante, portanto deve-se considerar o custo e, principalmente, o uso de materiais ecológicos não prejudiciais ao meio-ambiente.

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“…Our previous studies prove that the conventional highelastic polymer gel plug (without nanosilica) is feasible for fluid loss control and lowering formation damage during well workover in low pressure gas condensate reservoirs of Yakela gas field (northwest branch of Sinopec, China). [19][20][21] The degree of permeability damage depends on factors such as gel viscoelasticity, overbalance pressure, permeability and temperature, and others. For high-elastic polymer gel plug, it can form favorable gel filter cake with rigid and elastic characteristic that can benefit flow back after well workover and completion.…”

Section: Recommendations For Engineering Applicationmentioning

confidence: 99%

“…In addition, we extended the using of Cr 3+ /salt‐tolerant polymer gel for well workover in low‐temperature reservoirs and provide an avenue to bridge the design philosophy of well workover and water shutoff . Current gels are mostly highly viscous, and to lower the formation damage caused by the viscosity, Jia et al and Ziad et al invented a low viscosity gel plug. Although on the other hand, the elasticity and the strength mechanisms of the gel workover fluid are seldom discussed.…”

Section: Introductionmentioning

confidence: 99%

Environmental and strength‐enhanced nanosilica‐based composite gel for well temporary plugging in high‐temperature reservoirs

Jia

Yang

2018

Asia-Pacific J Chem Eng

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Polymer gel is widely used for well temporary plugging in petroleum engineering. This paper researched on a novel environmental and strength‐enhanced composite gel plug prepared by the nanosilica, the polymer hydrolyzed polyacrylamide and environmental friendly crosslinker polyethyleneimine, and the effect of strength enhancement and thermal stability mechanism of the nanosilica in this system was investigated. The experiments results showed that with the increase of the nanosilica concentration, the elastic modulus and viscous modulus, the stress under the same strain and the gel decompose temperature both increased. For the system containing 8% nanosilica, the elastic modulus is about 14 times than the one without it, whereas the viscous modulus is only 70.98 Pa, which is favorable for lowering the absorption damage to the formation. The strain–stress experiment results showed that to reach 45% strain, the stress of 44.6 KPa needed to be loaded (for composite gel with 8 wt% nanosilica) and during the compress process, the gel deformed with no break and after the stress was released, it got back to the original shape soon, indicating its good mechanical and elasticity performance. The differential scanning calorimetry (DSC) results revealed that the after adding nanosilica, more free water can be kept so that the system's thermal stability was effectively improved. The scanning electron microscopic images displayed that the nanosilica particles closely adhere to the polymer network; thus, the 3D structure of the composite gel became more compact and the gel's strength was improved. In the last section, some recommendations for well temporary plugging are proposed.

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Fluid loss control mechanism of using polymer gel pill based on multi-crosslinking during overbalanced well workover and completion

Cited by 48 publications

References 23 publications

Effect of carboxylic group on the compatibility with retarder and the retarding side effect of the fluid loss control additive used in oil well cement

Effect of carboxylic group on the compatibility with retarder and the retarding side effect of the fluid loss control additive used in oil well cement

Hidrogéis Compósitos Poliméricos Com Possível Aplicação No Controle De Permeabilidade Em Reservatórios De Petróleo: Uma Revisão.

Environmental and strength‐enhanced nanosilica‐based composite gel for well temporary plugging in high‐temperature reservoirs

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