MULTIPLE RWY OP INTERSECTING RWYS. ACR X NON ADHERENCE TO ATC CLRNC CLRED FOR IMMEDIATE TKOF) CANCELED ACR X TKOF CLRNC.

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ACR X CLRED FOR TKOF AS WE ENTERED RWY 1R; BUT DUE TO THE DISPLACED TKOF PWR POINT AND OUR 180000 GROSS WT; SOME TIME PASSED BEFORE WE WERE ABLE TO BEGIN ACCELERATING FOR TKOF. AS WE APCHED 100 KTS; THE TWR TOLD US TO ABORT OUR TKOF AFTER WHICH A NUMBER OF COMS WERE MADE; MOST OF WHICH WERE IN CONFLICT WITH OTHERS IN PROGRESS MAKING IT DIFFICULT FOR ME TO ACKNOWLEDGE THE ABORT INSTRUCTION. THE ABORT WAS MADE WITH REVERSE THRUST; SPD BRAKES AND DUE TO THE SIGNIFICANT RWY REMAINING ONLY LIGHT BRAKING WAS USED. ACR Y LNDG ON RWY 28L WAS TOLD TO GAR AS WE APCHED THE 28'S. PERHAPS THE TWR EXPECTED THAT WE WOULD HOLD SHORT OF THE 28'S; BUT THAT INSTRUCTION WAS NOT RECEIVED. PERHAPS THE TWR HAD ALSO EXPECTED THAT WE WOULD BE ACCELERATING FASTER AFTER WE RECEIVED TKOF CLRNC; BUT THE DISPLACED TKOF PWR POINT REQUIRES TAXI THRUST TO THAT POINT. IN RETROSPECT; IT SEEMS THAT IF THERE IS LNDG TFC THAT MAY BE CRITICAL THEN NO TKOF SHOULD BE PLANNED UNTIL THE TKOF ACFT IS AT THE TKOF PWR POINT. SUPPLEMENTAL INFO FROM ACN 225671: ACR X ROLLING TOWARDS THE TKOF SPOT; WERE CLRED FOR TKOF AND AT APPROX 100 KIAS AND ACCELERATING WHEN TWR TOLD US TO ABORT THE TKOF DUE TO TFC CONFLICT. THE LNDG JET WAS TOLD TO GAR. THE CAPT REJECTED THE TKOF AT ABOUT 105 KIAS. USED MAX REVERSE AND SPD BRAKES AND MIN BRAKES TO GET US TO STOP. WE WERE VERY HVY. WE CROSSED RWY 28L BUT DID NOT EXCEED ANY BRAKE TEMPS OR OTHER LIMITS. THE CREW PERFORMED ALL PROCS BY COMPANY SOP. WE RETURNED TO THE GATE FOR FUEL AND A MECHANICAL CHK OF THE BRAKES. I FEEL THE MANEUVER WAS SAFE BUT THE DISTANCE BTWN THE CONFLICTING ACR Y WAS DECREASED BY THIS MANEUVER.