High-temperature explosive for oilfield perforating

Abstract

Included are methods and systems for oilfield perforating. An example system includes a firing head subassembly; a gun subassembly; and 4,10-dinitro-2,6,8,12-tetraoxa-4,10-diazatetracyclo[5.5.0.05,9.03,11]-dodecane (“TEX”). An example method includes lowering a perforating system into a casing of a wellbore, wherein the perforating system comprises TEX; detonating the TEX; and perforating the casing.

What is claimed is: 
     
         1 . A system for oilfield perforating or cutting, the system comprising:
 a detonator; and   a shaped charge comprising 4,10-dinitro-2,6,8,12-tetraoxa-4,10-diazatetracyclo[5.5.0.0 5,9 .0 3,11 ]-dodecane (“TEX”).   
     
     
         2 . The system of  claim 1 , wherein the system further a firing head subassembly comprising a detonating cord initiator, wherein the detonating cord initiator comprises TEX. 
     
     
         3 . The system of  claim 1 , further comprising bi-directional boosters comprising TEX. 
     
     
         4 . The system of  claim 1 , further comprising a detonating cord comprising TEX. 
     
     
         5 . The system of  claim 1 , further comprising a gun subassembly. 
     
     
         6 . The system of  claim 1 , wherein the system additionally comprises an explosive component selected from the group consisting of 2,2′,2″,4,4′,4″,6,6′,6″-nonanitro-m-terphenyl (“NONA”), 1,3,5,7-tetranitro-1,3,5,7-tetrazocane (“HMX”), 1,3,5-trinitro-2-[2-(2,4,6-trinitrophenyl)ethenyl]benzene (“HNS”), 2,2-bis[(nitrooxy)methyl]propane-1,3-diyl dinitrate (“PETN”), 1,3,5-trinitro-1,3,5-triazinane (“RDX”), 1,3,5-triamino-2,4,6-trinitrobenzene (“TATB”), 3,3′-diamino-4,4′-azoxyfurazan (“DAAF”), 2,6-bis(picrylamino)-3,5-dinitropyridine (“PYX”), 5-nitro-1,2-dihydro-1,2,4-triazol-3-one (“NTO”), 2,4,6 trinitro-1,3 benzenediamine (“DATB”), hexanitroazobenzene (“HNAB”), titanium sub-hydride potassium perchlorate (“THKP”), 1,3,5-trinitro-2,4,6-tripicrylbenzene (“BRX”) and any combinations thereof. 
     
     
         7 . The system of  claim 6 , wherein the additional explosive component is mixed with the TEX. 
     
     
         8 . The system of  claim 1 , wherein the TEX has a particle size of about 50 to about 500 microns. 
     
     
         9 . The system of  claim 1 , wherein the TEX has a particle size of about 0.01 to less than about 50 microns. 
     
     
         10 . The system of  claim 1 , wherein the TEX is coated. 
     
     
         11 . The system of  claim 1 , wherein the system does not comprise an explosive component other than the TEX. 
     
     
         12 . A perforating system for oilfield perforating, the perforating system comprising:
 a detonating cord initiator;   a detonating cord coupled to the detonating cord initiator; and   a plurality of perforating gun subassemblies coupled to the detonating cord, wherein the plurality of perforating gun assemblies comprises a plurality of shaped charges, wherein the plurality of shaped charges comprises 4,10-dinitro-2,6,8,12-tetraoxa-4,10-diazatetracyclo[5.5.0.0 5,9 .0 3,11 ]-dodecane (“TEX”).   
     
     
         13 . The perforating system of  claim 12 , wherein the detonating cord initiator comprises TEX having a particle size of about 50 to about 500 microns and TEX having a particle size of about 0.01 to less than about 50 microns. 
     
     
         14 . The perforating system of  claim 12 , further comprising a donor booster comprising TEX having a particle size of about 50 to about 500 microns and TEX having a particle size of about 0.01 to less than about 50 microns. 
     
     
         15 . The perforating system of  claim 12 , further comprising an acceptor booster comprising TEX having a particle size of about 50 to about 500 microns and TEX having a particle size of about 0.01 to less than about 50 microns. 
     
     
         16 . A method for oilfield perforating comprising:
 lowering a perforating system into a casing of a wellbore, wherein the perforating system comprises 4,10-dinitro-2,6,8,12-tetraoxa-4,10-diazatetracyclo[5.5.0.0 5,9 .0 3,11 ]-dodecane (“TEX”);   detonating the TEX; and   perforating the casing.   
     
     
         17 . The method of  claim 16 , wherein the detonating comprises sequential detonation of a plurality of shaped charges, wherein the plurality of shaped charges comprises the TEX. 
     
     
         18 . The method of  claim 17 , wherein the plurality of shaped charges comprises a booster charge and a main charge. 
     
     
         19 . The method of  claim 18 , wherein the main charge comprises TEX having a particle size of about 50 to about 500 microns. 
     
     
         20 . The method of  claim 16 , wherein the detonating comprises simultaneous detonation of a plurality of shaped charges. 
     
     
         21 . The method of  claim 16 , further comprising allowing formation communication between a formation and the wellbore. 
     
     
         22 . The method of  claim 16 , wherein the wellbore comprises a temperature exceeding 204° C. for 1 hr., 177° C. for 10 hr., or 150° C. for 100 hr. 
     
     
         23 . The method of  claim 16 , further comprising cleaning the formed perforation by using a dynamic underbalance.